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Finding the Fourth Proportional to 223,468.68, 335,115.18 and 81,280.20

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Solution

The fourth proportional to 223,468.68, 335,115.18 and 81,280.20 is: 121,888.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,468.68 : 335,115.18 = 81,280.20 : x
  2. Step 2: Convert to fraction form
    223,468.68/335,115.18 = 81,280.20/x
  3. Step 3: Cross multiply
    223,468.68x = 335,115.18 × 81,280.20
  4. Step 4: Simplify right side
    223,468.68x = 27,238,228,853.44
  5. Step 5: Solve for x
    x = 27,238,228,853.44/223,468.68
  6. Step 6: Final answer
    x = 121,888.35

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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.