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Finding the Fourth Proportional to 324,259.20, 486,129.60 and 137,116.80

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Solution

The fourth proportional to 324,259.20, 486,129.60 and 137,116.80 is: 205,565.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,259.20 : 486,129.60 = 137,116.80 : x
  2. Step 2: Convert to fraction form
    324,259.20/486,129.60 = 137,116.80/x
  3. Step 3: Cross multiply
    324,259.20x = 486,129.60 × 137,116.80
  4. Step 4: Simplify right side
    324,259.20x = 66,656,535,137.28
  5. Step 5: Solve for x
    x = 66,656,535,137.28/324,259.20
  6. Step 6: Final answer
    x = 205,565.59

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1.5x scale

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.