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Finding the Fourth Proportional to 278,383.91, 417,599.28 and 88,871.31

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Solution

The fourth proportional to 278,383.91, 417,599.28 and 88,871.31 is: 133,314.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,383.91 : 417,599.28 = 88,871.31 : x
  2. Step 2: Convert to fraction form
    278,383.91/417,599.28 = 88,871.31/x
  3. Step 3: Cross multiply
    278,383.91x = 417,599.28 × 88,871.31
  4. Step 4: Simplify right side
    278,383.91x = 37,112,595,068.66
  5. Step 5: Solve for x
    x = 37,112,595,068.66/278,383.91
  6. Step 6: Final answer
    x = 133,314.44

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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.