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Finding the Fourth Proportional to 423,671.22, 635,506.32 and 108,128.16

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Solution

The fourth proportional to 423,671.22, 635,506.32 and 108,128.16 is: 162,192.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,671.22 : 635,506.32 = 108,128.16 : x
  2. Step 2: Convert to fraction form
    423,671.22/635,506.32 = 108,128.16/x
  3. Step 3: Cross multiply
    423,671.22x = 635,506.32 × 108,128.16
  4. Step 4: Simplify right side
    423,671.22x = 68,716,129,049.97
  5. Step 5: Solve for x
    x = 68,716,129,049.97/423,671.22
  6. Step 6: Final answer
    x = 162,192.11

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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.