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Finding the Fourth Proportional to 230,687.20, 345,658.20 and 130,549.60

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Solution

The fourth proportional to 230,687.20, 345,658.20 and 130,549.60 is: 195,613.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,687.20 : 345,658.20 = 130,549.60 : x
  2. Step 2: Convert to fraction form
    230,687.20/345,658.20 = 130,549.60/x
  3. Step 3: Cross multiply
    230,687.20x = 345,658.20 × 130,549.60
  4. Step 4: Simplify right side
    230,687.20x = 45,125,539,746.72
  5. Step 5: Solve for x
    x = 45,125,539,746.72/230,687.20
  6. Step 6: Final answer
    x = 195,613.54

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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.