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Finding the Fourth Proportional to 230,478.48, 345,688.56 and 90,335.52

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Solution

The fourth proportional to 230,478.48, 345,688.56 and 90,335.52 is: 135,491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,478.48 : 345,688.56 = 90,335.52 : x
  2. Step 2: Convert to fraction form
    230,478.48/345,688.56 = 90,335.52/x
  3. Step 3: Cross multiply
    230,478.48x = 345,688.56 × 90,335.52
  4. Step 4: Simplify right side
    230,478.48x = 31,227,955,825.65
  5. Step 5: Solve for x
    x = 31,227,955,825.65/230,478.48
  6. Step 6: Final answer
    x = 135,491.85

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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.