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Finding the Fourth Proportional to 402,019.41, 555,046.41 and 249,220.90

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Solution

The fourth proportional to 402,019.41, 555,046.41 and 249,220.90 is: 344,085.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,019.41 : 555,046.41 = 249,220.90 : x
  2. Step 2: Convert to fraction form
    402,019.41/555,046.41 = 249,220.90/x
  3. Step 3: Cross multiply
    402,019.41x = 555,046.41 × 249,220.90
  4. Step 4: Simplify right side
    402,019.41x = 138,329,165,841.97
  5. Step 5: Solve for x
    x = 138,329,165,841.97/402,019.41
  6. Step 6: Final answer
    x = 344,085.79

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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.