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Finding the Fourth Proportional to 243,508.70, 336,041.02 and 136,078.70

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Solution

The fourth proportional to 243,508.70, 336,041.02 and 136,078.70 is: 187,788.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,508.70 : 336,041.02 = 136,078.70 : x
  2. Step 2: Convert to fraction form
    243,508.70/336,041.02 = 136,078.70/x
  3. Step 3: Cross multiply
    243,508.70x = 336,041.02 × 136,078.70
  4. Step 4: Simplify right side
    243,508.70x = 45,728,025,528.40
  5. Step 5: Solve for x
    x = 45,728,025,528.40/243,508.70
  6. Step 6: Final answer
    x = 187,788.06

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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.