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Finding the Fourth Proportional to 230,085.60, 345,128.40 and 72,313.80

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Solution

The fourth proportional to 230,085.60, 345,128.40 and 72,313.80 is: 108,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,085.60 : 345,128.40 = 72,313.80 : x
  2. Step 2: Convert to fraction form
    230,085.60/345,128.40 = 72,313.80/x
  3. Step 3: Cross multiply
    230,085.60x = 345,128.40 × 72,313.80
  4. Step 4: Simplify right side
    230,085.60x = 24,957,546,091.92
  5. Step 5: Solve for x
    x = 24,957,546,091.92/230,085.60
  6. Step 6: Final answer
    x = 108,470.70

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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.