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Finding the Fourth Proportional to 423,665.85, 635,586.24 and 124,156.20

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Solution

The fourth proportional to 423,665.85, 635,586.24 and 124,156.20 is: 186,259.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,665.85 : 635,586.24 = 124,156.20 : x
  2. Step 2: Convert to fraction form
    423,665.85/635,586.24 = 124,156.20/x
  3. Step 3: Cross multiply
    423,665.85x = 635,586.24 × 124,156.20
  4. Step 4: Simplify right side
    423,665.85x = 78,911,972,330.69
  5. Step 5: Solve for x
    x = 78,911,972,330.69/423,665.85
  6. Step 6: Final answer
    x = 186,259.93

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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.