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Finding the Fourth Proportional to 156,428.60, 234,642.84 and 56,565.47

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Solution

The fourth proportional to 156,428.60, 234,642.84 and 56,565.47 is: 84,848.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,428.60 : 234,642.84 = 56,565.47 : x
  2. Step 2: Convert to fraction form
    156,428.60/234,642.84 = 56,565.47/x
  3. Step 3: Cross multiply
    156,428.60x = 234,642.84 × 56,565.47
  4. Step 4: Simplify right side
    156,428.60x = 13,272,681,353.52
  5. Step 5: Solve for x
    x = 13,272,681,353.52/156,428.60
  6. Step 6: Final answer
    x = 84,848.18

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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.