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Finding the Fourth Proportional to 324,758.70, 487,051.65 and 100,118.70

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Solution

The fourth proportional to 324,758.70, 487,051.65 and 100,118.70 is: 150,151.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,758.70 : 487,051.65 = 100,118.70 : x
  2. Step 2: Convert to fraction form
    324,758.70/487,051.65 = 100,118.70/x
  3. Step 3: Cross multiply
    324,758.70x = 487,051.65 × 100,118.70
  4. Step 4: Simplify right side
    324,758.70x = 48,762,978,030.86
  5. Step 5: Solve for x
    x = 48,762,978,030.86/324,758.70
  6. Step 6: Final answer
    x = 150,151.41

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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.