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Finding the Fourth Proportional to 421,148.48, 631,542.96 and 243,777.92

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Solution

The fourth proportional to 421,148.48, 631,542.96 and 243,777.92 is: 365,562.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,148.48 : 631,542.96 = 243,777.92 : x
  2. Step 2: Convert to fraction form
    421,148.48/631,542.96 = 243,777.92/x
  3. Step 3: Cross multiply
    421,148.48x = 631,542.96 × 243,777.92
  4. Step 4: Simplify right side
    421,148.48x = 153,956,229,179.44
  5. Step 5: Solve for x
    x = 153,956,229,179.44/421,148.48
  6. Step 6: Final answer
    x = 365,562.83

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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.