Home / 380,469,130.72-525,038,862.65-221,689,359.09

Finding the Fourth Proportional to 380,469,130.72, 525,038,862.65 and 221,689,359.09

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Solution

The fourth proportional to 380,469,130.72, 525,038,862.65 and 221,689,359.09 is: 305,926,340.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,469,130.72 : 525,038,862.65 = 221,689,359.09 : x
  2. Step 2: Convert to fraction form
    380,469,130.72/525,038,862.65 = 221,689,359.09/x
  3. Step 3: Cross multiply
    380,469,130.72x = 525,038,862.65 × 221,689,359.09
  4. Step 4: Simplify right side
    380,469,130.72x = 116,395,528,957,112,592
  5. Step 5: Solve for x
    x = 116,395,528,957,112,592/380,469,130.72
  6. Step 6: Final answer
    x = 305,926,340.82

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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.