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Finding the Fourth Proportional to 423,662.85, 635,581.74 and 124,153.20

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Solution

The fourth proportional to 423,662.85, 635,581.74 and 124,153.20 is: 186,255.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,662.85 : 635,581.74 = 124,153.20 : x
  2. Step 2: Convert to fraction form
    423,662.85/635,581.74 = 124,153.20/x
  3. Step 3: Cross multiply
    423,662.85x = 635,581.74 × 124,153.20
  4. Step 4: Simplify right side
    423,662.85x = 78,909,506,882.57
  5. Step 5: Solve for x
    x = 78,909,506,882.57/423,662.85
  6. Step 6: Final answer
    x = 186,255.43

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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.