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Finding the Fourth Proportional to 243,719.70, 365,795.55 and 143,754.90

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Solution

The fourth proportional to 243,719.70, 365,795.55 and 143,754.90 is: 215,759.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,719.70 : 365,795.55 = 143,754.90 : x
  2. Step 2: Convert to fraction form
    243,719.70/365,795.55 = 143,754.90/x
  3. Step 3: Cross multiply
    243,719.70x = 365,795.55 × 143,754.90
  4. Step 4: Simplify right side
    243,719.70x = 52,584,902,710.70
  5. Step 5: Solve for x
    x = 52,584,902,710.70/243,719.70
  6. Step 6: Final answer
    x = 215,759.75

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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.