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Finding the Fourth Proportional to 389,617.60, 584,426.40 and 237,402.40

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Solution

The fourth proportional to 389,617.60, 584,426.40 and 237,402.40 is: 356,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,617.60 : 584,426.40 = 237,402.40 : x
  2. Step 2: Convert to fraction form
    389,617.60/584,426.40 = 237,402.40/x
  3. Step 3: Cross multiply
    389,617.60x = 584,426.40 × 237,402.40
  4. Step 4: Simplify right side
    389,617.60x = 138,744,229,983.36
  5. Step 5: Solve for x
    x = 138,744,229,983.36/389,617.60
  6. Step 6: Final answer
    x = 356,103.60

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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.