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Finding the Fourth Proportional to 260,753.76, 391,085.28 and 120,500.64

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Solution

The fourth proportional to 260,753.76, 391,085.28 and 120,500.64 is: 180,730.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,753.76 : 391,085.28 = 120,500.64 : x
  2. Step 2: Convert to fraction form
    260,753.76/391,085.28 = 120,500.64/x
  3. Step 3: Cross multiply
    260,753.76x = 391,085.28 × 120,500.64
  4. Step 4: Simplify right side
    260,753.76x = 47,126,026,534.58
  5. Step 5: Solve for x
    x = 47,126,026,534.58/260,753.76
  6. Step 6: Final answer
    x = 180,730.00

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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.