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Finding the Fourth Proportional to 324,748.70, 487,036.65 and 100,108.70

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Solution

The fourth proportional to 324,748.70, 487,036.65 and 100,108.70 is: 150,136.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,748.70 : 487,036.65 = 100,108.70 : x
  2. Step 2: Convert to fraction form
    324,748.70/487,036.65 = 100,108.70/x
  3. Step 3: Cross multiply
    324,748.70x = 487,036.65 × 100,108.70
  4. Step 4: Simplify right side
    324,748.70x = 48,756,605,883.86
  5. Step 5: Solve for x
    x = 48,756,605,883.86/324,748.70
  6. Step 6: Final answer
    x = 150,136.42

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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.