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Finding the Fourth Proportional to 421,177.50, 632,061.48 and 243,439.98

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Solution

The fourth proportional to 421,177.50, 632,061.48 and 243,439.98 is: 365,330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,177.50 : 632,061.48 = 243,439.98 : x
  2. Step 2: Convert to fraction form
    421,177.50/632,061.48 = 243,439.98/x
  3. Step 3: Cross multiply
    421,177.50x = 632,061.48 × 243,439.98
  4. Step 4: Simplify right side
    421,177.50x = 153,869,034,049.97
  5. Step 5: Solve for x
    x = 153,869,034,049.97/421,177.50
  6. Step 6: Final answer
    x = 365,330.61

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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.