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Finding the Fourth Proportional to 243,722.20, 365,799.30 and 143,757.40

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Solution

The fourth proportional to 243,722.20, 365,799.30 and 143,757.40 is: 215,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,722.20 : 365,799.30 = 143,757.40 : x
  2. Step 2: Convert to fraction form
    243,722.20/365,799.30 = 143,757.40/x
  3. Step 3: Cross multiply
    243,722.20x = 365,799.30 × 143,757.40
  4. Step 4: Simplify right side
    243,722.20x = 52,586,356,289.82
  5. Step 5: Solve for x
    x = 52,586,356,289.82/243,722.20
  6. Step 6: Final answer
    x = 215,763.51

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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.