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Finding the Fourth Proportional to 423,758.85, 635,638.26 and 157,586.37

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Solution

The fourth proportional to 423,758.85, 635,638.26 and 157,586.37 is: 236,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,758.85 : 635,638.26 = 157,586.37 : x
  2. Step 2: Convert to fraction form
    423,758.85/635,638.26 = 157,586.37/x
  3. Step 3: Cross multiply
    423,758.85x = 635,638.26 × 157,586.37
  4. Step 4: Simplify right side
    423,758.85x = 100,167,926,026.52
  5. Step 5: Solve for x
    x = 100,167,926,026.52/423,758.85
  6. Step 6: Final answer
    x = 236,379.55

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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.