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Finding the Fourth Proportional to 324,414.20, 486,390.90 and 124,657.40

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Solution

The fourth proportional to 324,414.20, 486,390.90 and 124,657.40 is: 186,897.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,414.20 : 486,390.90 = 124,657.40 : x
  2. Step 2: Convert to fraction form
    324,414.20/486,390.90 = 124,657.40/x
  3. Step 3: Cross multiply
    324,414.20x = 486,390.90 × 124,657.40
  4. Step 4: Simplify right side
    324,414.20x = 60,632,224,977.66
  5. Step 5: Solve for x
    x = 60,632,224,977.66/324,414.20
  6. Step 6: Final answer
    x = 186,897.57

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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.