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Finding the Fourth Proportional to 402,681.38, 555,481.60 and 249,667.92

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Solution

The fourth proportional to 402,681.38, 555,481.60 and 249,667.92 is: 344,406.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,681.38 : 555,481.60 = 249,667.92 : x
  2. Step 2: Convert to fraction form
    402,681.38/555,481.60 = 249,667.92/x
  3. Step 3: Cross multiply
    402,681.38x = 555,481.60 × 249,667.92
  4. Step 4: Simplify right side
    402,681.38x = 138,685,935,046.10
  5. Step 5: Solve for x
    x = 138,685,935,046.10/402,681.38
  6. Step 6: Final answer
    x = 344,406.13

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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.