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Finding the Fourth Proportional to 424,462.72, 636,699.08 and 168,357.74

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Solution

The fourth proportional to 424,462.72, 636,699.08 and 168,357.74 is: 252,538.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,462.72 : 636,699.08 = 168,357.74 : x
  2. Step 2: Convert to fraction form
    424,462.72/636,699.08 = 168,357.74/x
  3. Step 3: Cross multiply
    424,462.72x = 636,699.08 × 168,357.74
  4. Step 4: Simplify right side
    424,462.72x = 107,193,218,168.88
  5. Step 5: Solve for x
    x = 107,193,218,168.88/424,462.72
  6. Step 6: Final answer
    x = 252,538.59

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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.