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Finding the Fourth Proportional to 223,488.87, 335,443.98 and 81,471.40

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Solution

The fourth proportional to 223,488.87, 335,443.98 and 81,471.40 is: 122,283.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,488.87 : 335,443.98 = 81,471.40 : x
  2. Step 2: Convert to fraction form
    223,488.87/335,443.98 = 81,471.40/x
  3. Step 3: Cross multiply
    223,488.87x = 335,443.98 × 81,471.40
  4. Step 4: Simplify right side
    223,488.87x = 27,329,092,025.95
  5. Step 5: Solve for x
    x = 27,329,092,025.95/223,488.87
  6. Step 6: Final answer
    x = 122,283.91

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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.