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Finding the Fourth Proportional to 283,437.42, 391,125.66 and 156,113

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Solution

The fourth proportional to 283,437.42, 391,125.66 and 156,113 is: 215,426.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,437.42 : 391,125.66 = 156,113 : x
  2. Step 2: Convert to fraction form
    283,437.42/391,125.66 = 156,113/x
  3. Step 3: Cross multiply
    283,437.42x = 391,125.66 × 156,113
  4. Step 4: Simplify right side
    283,437.42x = 61,059,800,159.58
  5. Step 5: Solve for x
    x = 61,059,800,159.58/283,437.42
  6. Step 6: Final answer
    x = 215,426.04

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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.