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Finding the Fourth Proportional to 243,380.52, 335,646.95 and 202,679.40

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Solution

The fourth proportional to 243,380.52, 335,646.95 and 202,679.40 is: 279,515.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,380.52 : 335,646.95 = 202,679.40 : x
  2. Step 2: Convert to fraction form
    243,380.52/335,646.95 = 202,679.40/x
  3. Step 3: Cross multiply
    243,380.52x = 335,646.95 × 202,679.40
  4. Step 4: Simplify right side
    243,380.52x = 68,028,721,424.43
  5. Step 5: Solve for x
    x = 68,028,721,424.43/243,380.52
  6. Step 6: Final answer
    x = 279,515.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.