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Finding the Fourth Proportional to 260,828.40, 391,145.40 and 181,707.60

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Solution

The fourth proportional to 260,828.40, 391,145.40 and 181,707.60 is: 272,493.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,828.40 : 391,145.40 = 181,707.60 : x
  2. Step 2: Convert to fraction form
    260,828.40/391,145.40 = 181,707.60/x
  3. Step 3: Cross multiply
    260,828.40x = 391,145.40 × 181,707.60
  4. Step 4: Simplify right side
    260,828.40x = 71,074,091,885.04
  5. Step 5: Solve for x
    x = 71,074,091,885.04/260,828.40
  6. Step 6: Final answer
    x = 272,493.69

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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.