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Finding the Fourth Proportional to 230,077.20, 345,115.80 and 220,040.40

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Solution

The fourth proportional to 230,077.20, 345,115.80 and 220,040.40 is: 330,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,077.20 : 345,115.80 = 220,040.40 : x
  2. Step 2: Convert to fraction form
    230,077.20/345,115.80 = 220,040.40/x
  3. Step 3: Cross multiply
    230,077.20x = 345,115.80 × 220,040.40
  4. Step 4: Simplify right side
    230,077.20x = 75,939,418,678.32
  5. Step 5: Solve for x
    x = 75,939,418,678.32/230,077.20
  6. Step 6: Final answer
    x = 330,060.60

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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.