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Finding the Fourth Proportional to 243,423.80, 365,049.30 and 168,543.80

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Solution

The fourth proportional to 243,423.80, 365,049.30 and 168,543.80 is: 252,755.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,423.80 : 365,049.30 = 168,543.80 : x
  2. Step 2: Convert to fraction form
    243,423.80/365,049.30 = 168,543.80/x
  3. Step 3: Cross multiply
    243,423.80x = 365,049.30 × 168,543.80
  4. Step 4: Simplify right side
    243,423.80x = 61,526,796,209.34
  5. Step 5: Solve for x
    x = 61,526,796,209.34/243,423.80
  6. Step 6: Final answer
    x = 252,755.88

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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.