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Finding the Fourth Proportional to 423,658.68, 635,493.18 and 124,145.34

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Solution

The fourth proportional to 423,658.68, 635,493.18 and 124,145.34 is: 186,219.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,658.68 : 635,493.18 = 124,145.34 : x
  2. Step 2: Convert to fraction form
    423,658.68/635,493.18 = 124,145.34/x
  3. Step 3: Cross multiply
    423,658.68x = 635,493.18 × 124,145.34
  4. Step 4: Simplify right side
    423,658.68x = 78,893,516,898.78
  5. Step 5: Solve for x
    x = 78,893,516,898.78/423,658.68
  6. Step 6: Final answer
    x = 186,219.52

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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.