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Finding the Fourth Proportional to 423,512.13, 635,276.34 and 103,666.74

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Solution

The fourth proportional to 423,512.13, 635,276.34 and 103,666.74 is: 155,502.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,512.13 : 635,276.34 = 103,666.74 : x
  2. Step 2: Convert to fraction form
    423,512.13/635,276.34 = 103,666.74/x
  3. Step 3: Cross multiply
    423,512.13x = 635,276.34 × 103,666.74
  4. Step 4: Simplify right side
    423,512.13x = 65,857,027,166.93
  5. Step 5: Solve for x
    x = 65,857,027,166.93/423,512.13
  6. Step 6: Final answer
    x = 155,502.10

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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.