Home / 278,252.20-417,394.46-78,555.87

Finding the Fourth Proportional to 278,252.20, 417,394.46 and 78,555.87

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Solution

The fourth proportional to 278,252.20, 417,394.46 and 78,555.87 is: 117,838.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,252.20 : 417,394.46 = 78,555.87 : x
  2. Step 2: Convert to fraction form
    278,252.20/417,394.46 = 78,555.87/x
  3. Step 3: Cross multiply
    278,252.20x = 417,394.46 × 78,555.87
  4. Step 4: Simplify right side
    278,252.20x = 32,788,784,938.48
  5. Step 5: Solve for x
    x = 32,788,784,938.48/278,252.20
  6. Step 6: Final answer
    x = 117,838.37

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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.