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Finding the Fourth Proportional to 260,512.80, 390,769.20 and 94,279.20

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Solution

The fourth proportional to 260,512.80, 390,769.20 and 94,279.20 is: 141,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,512.80 : 390,769.20 = 94,279.20 : x
  2. Step 2: Convert to fraction form
    260,512.80/390,769.20 = 94,279.20/x
  3. Step 3: Cross multiply
    260,512.80x = 390,769.20 × 94,279.20
  4. Step 4: Simplify right side
    260,512.80x = 36,841,407,560.64
  5. Step 5: Solve for x
    x = 36,841,407,560.64/260,512.80
  6. Step 6: Final answer
    x = 141,418.80

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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.