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Finding the Fourth Proportional to 243,871.92, 336,656.18 and 141,860.21

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Solution

The fourth proportional to 243,871.92, 336,656.18 and 141,860.21 is: 195,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,871.92 : 336,656.18 = 141,860.21 : x
  2. Step 2: Convert to fraction form
    243,871.92/336,656.18 = 141,860.21/x
  3. Step 3: Cross multiply
    243,871.92x = 336,656.18 × 141,860.21
  4. Step 4: Simplify right side
    243,871.92x = 47,758,115,063.97
  5. Step 5: Solve for x
    x = 47,758,115,063.97/243,871.92
  6. Step 6: Final answer
    x = 195,832.78

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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.