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Finding the Fourth Proportional to 324,552.14, 486,874.20 and 99,931.28

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Solution

The fourth proportional to 324,552.14, 486,874.20 and 99,931.28 is: 149,911.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,552.14 : 486,874.20 = 99,931.28 : x
  2. Step 2: Convert to fraction form
    324,552.14/486,874.20 = 99,931.28/x
  3. Step 3: Cross multiply
    324,552.14x = 486,874.20 × 99,931.28
  4. Step 4: Simplify right side
    324,552.14x = 48,653,962,004.98
  5. Step 5: Solve for x
    x = 48,653,962,004.98/324,552.14
  6. Step 6: Final answer
    x = 149,911.08

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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.