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Finding the Fourth Proportional to 257,293.13, 355,064.52 and 156,691.13

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Solution

The fourth proportional to 257,293.13, 355,064.52 and 156,691.13 is: 216,233.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,293.13 : 355,064.52 = 156,691.13 : x
  2. Step 2: Convert to fraction form
    257,293.13/355,064.52 = 156,691.13/x
  3. Step 3: Cross multiply
    257,293.13x = 355,064.52 × 156,691.13
  4. Step 4: Simplify right side
    257,293.13x = 55,635,459,086.39
  5. Step 5: Solve for x
    x = 55,635,459,086.39/257,293.13
  6. Step 6: Final answer
    x = 216,233.76

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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.