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Finding the Fourth Proportional to 260,866.80, 391,775.40 and 228,207.60

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Solution

The fourth proportional to 260,866.80, 391,775.40 and 228,207.60 is: 342,727.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,866.80 : 391,775.40 = 228,207.60 : x
  2. Step 2: Convert to fraction form
    260,866.80/391,775.40 = 228,207.60/x
  3. Step 3: Cross multiply
    260,866.80x = 391,775.40 × 228,207.60
  4. Step 4: Simplify right side
    260,866.80x = 89,406,123,773.04
  5. Step 5: Solve for x
    x = 89,406,123,773.04/260,866.80
  6. Step 6: Final answer
    x = 342,727.11

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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.