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Finding the Fourth Proportional to 243,508.01, 336,040.08 and 136,078.01

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Solution

The fourth proportional to 243,508.01, 336,040.08 and 136,078.01 is: 187,787.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,508.01 : 336,040.08 = 136,078.01 : x
  2. Step 2: Convert to fraction form
    243,508.01/336,040.08 = 136,078.01/x
  3. Step 3: Cross multiply
    243,508.01x = 336,040.08 × 136,078.01
  4. Step 4: Simplify right side
    243,508.01x = 45,727,665,366.64
  5. Step 5: Solve for x
    x = 45,727,665,366.64/243,508.01
  6. Step 6: Final answer
    x = 187,787.11

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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.