Home / 380,890,101,011.50-525,628,425,192.60-209,612,032,501.02

Finding the Fourth Proportional to 380,890,101,011.50, 525,628,425,192.60 and 209,612,032,501.02

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Solution

The fourth proportional to 380,890,101,011.50, 525,628,425,192.60 and 209,612,032,501.02 is: 289,264,652,067.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,890,101,011.50 : 525,628,425,192.60 = 209,612,032,501.02 : x
  2. Step 2: Convert to fraction form
    380,890,101,011.50/525,628,425,192.60 = 209,612,032,501.02/x
  3. Step 3: Cross multiply
    380,890,101,011.50x = 525,628,425,192.60 × 209,612,032,501.02
  4. Step 4: Simplify right side
    380,890,101,011.50x = 110,178,042,544,931,225,993,216
  5. Step 5: Solve for x
    x = 110,178,042,544,931,225,993,216/380,890,101,011.50
  6. Step 6: Final answer
    x = 289,264,652,067.20

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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.