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Finding the Fourth Proportional to 278,859.60, 417,828.60 and 237,387.60

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Solution

The fourth proportional to 278,859.60, 417,828.60 and 237,387.60 is: 355,689.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,859.60 : 417,828.60 = 237,387.60 : x
  2. Step 2: Convert to fraction form
    278,859.60/417,828.60 = 237,387.60/x
  3. Step 3: Cross multiply
    278,859.60x = 417,828.60 × 237,387.60
  4. Step 4: Simplify right side
    278,859.60x = 99,187,328,565.36
  5. Step 5: Solve for x
    x = 99,187,328,565.36/278,859.60
  6. Step 6: Final answer
    x = 355,689.13

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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.