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Finding the Fourth Proportional to 398,077.60, 597,116.40 and 220,493.20

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Solution

The fourth proportional to 398,077.60, 597,116.40 and 220,493.20 is: 330,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,077.60 : 597,116.40 = 220,493.20 : x
  2. Step 2: Convert to fraction form
    398,077.60/597,116.40 = 220,493.20/x
  3. Step 3: Cross multiply
    398,077.60x = 597,116.40 × 220,493.20
  4. Step 4: Simplify right side
    398,077.60x = 131,660,105,808.48
  5. Step 5: Solve for x
    x = 131,660,105,808.48/398,077.60
  6. Step 6: Final answer
    x = 330,739.80

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Similar ratio
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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.