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Finding the Fourth Proportional to 423,397.31, 584,289.12 and 251,349.78

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Solution

The fourth proportional to 423,397.31, 584,289.12 and 251,349.78 is: 346,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,397.31 : 584,289.12 = 251,349.78 : x
  2. Step 2: Convert to fraction form
    423,397.31/584,289.12 = 251,349.78/x
  3. Step 3: Cross multiply
    423,397.31x = 584,289.12 × 251,349.78
  4. Step 4: Simplify right side
    423,397.31x = 146,860,944,902.04
  5. Step 5: Solve for x
    x = 146,860,944,902.04/423,397.31
  6. Step 6: Final answer
    x = 346,863.20

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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.