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Finding the Fourth Proportional to 390,691.85, 584,439.08 and 295,212.29

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Solution

The fourth proportional to 390,691.85, 584,439.08 and 295,212.29 is: 441,610.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,691.85 : 584,439.08 = 295,212.29 : x
  2. Step 2: Convert to fraction form
    390,691.85/584,439.08 = 295,212.29/x
  3. Step 3: Cross multiply
    390,691.85x = 584,439.08 × 295,212.29
  4. Step 4: Simplify right side
    390,691.85x = 172,533,594,774.04
  5. Step 5: Solve for x
    x = 172,533,594,774.04/390,691.85
  6. Step 6: Final answer
    x = 441,610.43

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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.