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Finding the Fourth Proportional to 283,654.48, 391,435.48 and 156,330.04

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Solution

The fourth proportional to 283,654.48, 391,435.48 and 156,330.04 is: 215,731.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,654.48 : 391,435.48 = 156,330.04 : x
  2. Step 2: Convert to fraction form
    283,654.48/391,435.48 = 156,330.04/x
  3. Step 3: Cross multiply
    283,654.48x = 391,435.48 × 156,330.04
  4. Step 4: Simplify right side
    283,654.48x = 61,193,124,245.82
  5. Step 5: Solve for x
    x = 61,193,124,245.82/283,654.48
  6. Step 6: Final answer
    x = 215,731.21

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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.