Home / 465,711.18-642,689.02-256,167.36

Finding the Fourth Proportional to 465,711.18, 642,689.02 and 256,167.36

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Solution

The fourth proportional to 465,711.18, 642,689.02 and 256,167.36 is: 353,515.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,711.18 : 642,689.02 = 256,167.36 : x
  2. Step 2: Convert to fraction form
    465,711.18/642,689.02 = 256,167.36/x
  3. Step 3: Cross multiply
    465,711.18x = 642,689.02 × 256,167.36
  4. Step 4: Simplify right side
    465,711.18x = 164,635,948,433.66
  5. Step 5: Solve for x
    x = 164,635,948,433.66/465,711.18
  6. Step 6: Final answer
    x = 353,515.13

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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.