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Finding the Fourth Proportional to 230,628.28, 345,689.70 and 90,232.60

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Solution

The fourth proportional to 230,628.28, 345,689.70 and 90,232.60 is: 135,250.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,628.28 : 345,689.70 = 90,232.60 : x
  2. Step 2: Convert to fraction form
    230,628.28/345,689.70 = 90,232.60/x
  3. Step 3: Cross multiply
    230,628.28x = 345,689.70 × 90,232.60
  4. Step 4: Simplify right side
    230,628.28x = 31,192,480,424.22
  5. Step 5: Solve for x
    x = 31,192,480,424.22/230,628.28
  6. Step 6: Final answer
    x = 135,250.02

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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.