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Finding the Fourth Proportional to 283,496.48, 391,225.44 and 156,172.16

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Solution

The fourth proportional to 283,496.48, 391,225.44 and 156,172.16 is: 215,517.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,496.48 : 391,225.44 = 156,172.16 : x
  2. Step 2: Convert to fraction form
    283,496.48/391,225.44 = 156,172.16/x
  3. Step 3: Cross multiply
    283,496.48x = 391,225.44 × 156,172.16
  4. Step 4: Simplify right side
    283,496.48x = 61,098,522,011.75
  5. Step 5: Solve for x
    x = 61,098,522,011.75/283,496.48
  6. Step 6: Final answer
    x = 215,517.74

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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.