Home / 260,908.83-391,419.02-80,990.30

Finding the Fourth Proportional to 260,908.83, 391,419.02 and 80,990.30

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Solution

The fourth proportional to 260,908.83, 391,419.02 and 80,990.30 is: 121,502.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,908.83 : 391,419.02 = 80,990.30 : x
  2. Step 2: Convert to fraction form
    260,908.83/391,419.02 = 80,990.30/x
  3. Step 3: Cross multiply
    260,908.83x = 391,419.02 × 80,990.30
  4. Step 4: Simplify right side
    260,908.83x = 31,701,145,036.53
  5. Step 5: Solve for x
    x = 31,701,145,036.53/260,908.83
  6. Step 6: Final answer
    x = 121,502.77

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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.