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Finding the Fourth Proportional to 279,155.87, 418,804.02 and 89,633.18

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Solution

The fourth proportional to 279,155.87, 418,804.02 and 89,633.18 is: 134,472.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,155.87 : 418,804.02 = 89,633.18 : x
  2. Step 2: Convert to fraction form
    279,155.87/418,804.02 = 89,633.18/x
  3. Step 3: Cross multiply
    279,155.87x = 418,804.02 × 89,633.18
  4. Step 4: Simplify right side
    279,155.87x = 37,538,737,156.39
  5. Step 5: Solve for x
    x = 37,538,737,156.39/279,155.87
  6. Step 6: Final answer
    x = 134,472.32

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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.