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Finding the Fourth Proportional to 423,705.52, 635,472.16 and 124,105.65

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Solution

The fourth proportional to 423,705.52, 635,472.16 and 124,105.65 is: 186,133.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,705.52 : 635,472.16 = 124,105.65 : x
  2. Step 2: Convert to fraction form
    423,705.52/635,472.16 = 124,105.65/x
  3. Step 3: Cross multiply
    423,705.52x = 635,472.16 × 124,105.65
  4. Step 4: Simplify right side
    423,705.52x = 78,865,685,163.44
  5. Step 5: Solve for x
    x = 78,865,685,163.44/423,705.52
  6. Step 6: Final answer
    x = 186,133.25

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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.