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Finding the Fourth Proportional to 361,688.97, 542,654.96 and 253,730.83

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Solution

The fourth proportional to 361,688.97, 542,654.96 and 253,730.83 is: 380,681.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,688.97 : 542,654.96 = 253,730.83 : x
  2. Step 2: Convert to fraction form
    361,688.97/542,654.96 = 253,730.83/x
  3. Step 3: Cross multiply
    361,688.97x = 542,654.96 × 253,730.83
  4. Step 4: Simplify right side
    361,688.97x = 137,688,293,404.42
  5. Step 5: Solve for x
    x = 137,688,293,404.42/361,688.97
  6. Step 6: Final answer
    x = 380,681.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.