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Finding the Fourth Proportional to 278,251.88, 417,384.84 and 88,709.36

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Solution

The fourth proportional to 278,251.88, 417,384.84 and 88,709.36 is: 133,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,251.88 : 417,384.84 = 88,709.36 : x
  2. Step 2: Convert to fraction form
    278,251.88/417,384.84 = 88,709.36/x
  3. Step 3: Cross multiply
    278,251.88x = 417,384.84 × 88,709.36
  4. Step 4: Simplify right side
    278,251.88x = 37,025,942,030.10
  5. Step 5: Solve for x
    x = 37,025,942,030.10/278,251.88
  6. Step 6: Final answer
    x = 133,066.28

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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.