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Finding the Fourth Proportional to 260,852.80, 391,279.20 and 225,423.40

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Solution

The fourth proportional to 260,852.80, 391,279.20 and 225,423.40 is: 338,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,852.80 : 391,279.20 = 225,423.40 : x
  2. Step 2: Convert to fraction form
    260,852.80/391,279.20 = 225,423.40/x
  3. Step 3: Cross multiply
    260,852.80x = 391,279.20 × 225,423.40
  4. Step 4: Simplify right side
    260,852.80x = 88,203,487,613.28
  5. Step 5: Solve for x
    x = 88,203,487,613.28/260,852.80
  6. Step 6: Final answer
    x = 338,135.10

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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.