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Finding the Fourth Proportional to 243,602.28, 336,202.56 and 136,194.48

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Solution

The fourth proportional to 243,602.28, 336,202.56 and 136,194.48 is: 187,965.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,602.28 : 336,202.56 = 136,194.48 : x
  2. Step 2: Convert to fraction form
    243,602.28/336,202.56 = 136,194.48/x
  3. Step 3: Cross multiply
    243,602.28x = 336,202.56 × 136,194.48
  4. Step 4: Simplify right side
    243,602.28x = 45,788,932,833.87
  5. Step 5: Solve for x
    x = 45,788,932,833.87/243,602.28
  6. Step 6: Final answer
    x = 187,965.95

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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.