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Finding the Fourth Proportional to 324,476.85, 486,761.85 and 99,856.29

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Solution

The fourth proportional to 324,476.85, 486,761.85 and 99,856.29 is: 149,798.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,476.85 : 486,761.85 = 99,856.29 : x
  2. Step 2: Convert to fraction form
    324,476.85/486,761.85 = 99,856.29/x
  3. Step 3: Cross multiply
    324,476.85x = 486,761.85 × 99,856.29
  4. Step 4: Simplify right side
    324,476.85x = 48,606,232,454.54
  5. Step 5: Solve for x
    x = 48,606,232,454.54/324,476.85
  6. Step 6: Final answer
    x = 149,798.77

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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.