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Finding the Fourth Proportional to 283,423.62, 391,123.58 and 156,098.92

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Solution

The fourth proportional to 283,423.62, 391,123.58 and 156,098.92 is: 215,415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,423.62 : 391,123.58 = 156,098.92 : x
  2. Step 2: Convert to fraction form
    283,423.62/391,123.58 = 156,098.92/x
  3. Step 3: Cross multiply
    283,423.62x = 391,123.58 × 156,098.92
  4. Step 4: Simplify right side
    283,423.62x = 61,053,968,424.53
  5. Step 5: Solve for x
    x = 61,053,968,424.53/283,423.62
  6. Step 6: Final answer
    x = 215,415.95

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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.