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Finding the Fourth Proportional to 206,691.10, 310,036.65 and 147,204.70

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Solution

The fourth proportional to 206,691.10, 310,036.65 and 147,204.70 is: 220,807.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,691.10 : 310,036.65 = 147,204.70 : x
  2. Step 2: Convert to fraction form
    206,691.10/310,036.65 = 147,204.70/x
  3. Step 3: Cross multiply
    206,691.10x = 310,036.65 × 147,204.70
  4. Step 4: Simplify right side
    206,691.10x = 45,638,852,052.26
  5. Step 5: Solve for x
    x = 45,638,852,052.26/206,691.10
  6. Step 6: Final answer
    x = 220,807.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.