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Finding the Fourth Proportional to 445,519.60, 668,279.40 and 220,793.20

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Solution

The fourth proportional to 445,519.60, 668,279.40 and 220,793.20 is: 331,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,519.60 : 668,279.40 = 220,793.20 : x
  2. Step 2: Convert to fraction form
    445,519.60/668,279.40 = 220,793.20/x
  3. Step 3: Cross multiply
    445,519.60x = 668,279.40 × 220,793.20
  4. Step 4: Simplify right side
    445,519.60x = 147,551,547,220.08
  5. Step 5: Solve for x
    x = 147,551,547,220.08/445,519.60
  6. Step 6: Final answer
    x = 331,189.80

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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.