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Finding the Fourth Proportional to 664,720.80, 996,886.80 and 238,207.20

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Solution

The fourth proportional to 664,720.80, 996,886.80 and 238,207.20 is: 357,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,720.80 : 996,886.80 = 238,207.20 : x
  2. Step 2: Convert to fraction form
    664,720.80/996,886.80 = 238,207.20/x
  3. Step 3: Cross multiply
    664,720.80x = 996,886.80 × 238,207.20
  4. Step 4: Simplify right side
    664,720.80x = 237,465,613,344.96
  5. Step 5: Solve for x
    x = 237,465,613,344.96/664,720.80
  6. Step 6: Final answer
    x = 357,241.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.