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Finding the Fourth Proportional to 423,663.75, 635,495.04 and 108,120.65

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Solution

The fourth proportional to 423,663.75, 635,495.04 and 108,120.65 is: 162,180.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,663.75 : 635,495.04 = 108,120.65 : x
  2. Step 2: Convert to fraction form
    423,663.75/635,495.04 = 108,120.65/x
  3. Step 3: Cross multiply
    423,663.75x = 635,495.04 × 108,120.65
  4. Step 4: Simplify right side
    423,663.75x = 68,710,133,619.10
  5. Step 5: Solve for x
    x = 68,710,133,619.10/423,663.75
  6. Step 6: Final answer
    x = 162,180.82

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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.