Home / 380,890,101,012.50-525,628,425,193.98-209,612,032,502.02

Finding the Fourth Proportional to 380,890,101,012.50, 525,628,425,193.98 and 209,612,032,502.02

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Solution

The fourth proportional to 380,890,101,012.50, 525,628,425,193.98 and 209,612,032,502.02 is: 289,264,652,068.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,890,101,012.50 : 525,628,425,193.98 = 209,612,032,502.02 : x
  2. Step 2: Convert to fraction form
    380,890,101,012.50/525,628,425,193.98 = 209,612,032,502.02/x
  3. Step 3: Cross multiply
    380,890,101,012.50x = 525,628,425,193.98 × 209,612,032,502.02
  4. Step 4: Simplify right side
    380,890,101,012.50x = 110,178,042,545,746,112,151,552
  5. Step 5: Solve for x
    x = 110,178,042,545,746,112,151,552/380,890,101,012.50
  6. Step 6: Final answer
    x = 289,264,652,068.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.