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Finding the Fourth Proportional to 260,925.30, 391,412.52 and 83,390.13

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Solution

The fourth proportional to 260,925.30, 391,412.52 and 83,390.13 is: 125,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,925.30 : 391,412.52 = 83,390.13 : x
  2. Step 2: Convert to fraction form
    260,925.30/391,412.52 = 83,390.13/x
  3. Step 3: Cross multiply
    260,925.30x = 391,412.52 × 83,390.13
  4. Step 4: Simplify right side
    260,925.30x = 32,639,940,926.43
  5. Step 5: Solve for x
    x = 32,639,940,926.43/260,925.30
  6. Step 6: Final answer
    x = 125,093.05

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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.