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Finding the Fourth Proportional to 423,699.12, 635,548.47 and 108,155.92

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Solution

The fourth proportional to 423,699.12, 635,548.47 and 108,155.92 is: 162,233.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,699.12 : 635,548.47 = 108,155.92 : x
  2. Step 2: Convert to fraction form
    423,699.12/635,548.47 = 108,155.92/x
  3. Step 3: Cross multiply
    423,699.12x = 635,548.47 × 108,155.92
  4. Step 4: Simplify right side
    423,699.12x = 68,738,330,474.67
  5. Step 5: Solve for x
    x = 68,738,330,474.67/423,699.12
  6. Step 6: Final answer
    x = 162,233.83

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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.