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Finding the Fourth Proportional to 283,652.60, 391,439.79 and 156,328.16

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Solution

The fourth proportional to 283,652.60, 391,439.79 and 156,328.16 is: 215,732.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,652.60 : 391,439.79 = 156,328.16 : x
  2. Step 2: Convert to fraction form
    283,652.60/391,439.79 = 156,328.16/x
  3. Step 3: Cross multiply
    283,652.60x = 391,439.79 × 156,328.16
  4. Step 4: Simplify right side
    283,652.60x = 61,193,060,164.29
  5. Step 5: Solve for x
    x = 61,193,060,164.29/283,652.60
  6. Step 6: Final answer
    x = 215,732.42

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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.