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Finding the Fourth Proportional to 247,855.30, 342,040.66 and 140,432.60

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Solution

The fourth proportional to 247,855.30, 342,040.66 and 140,432.60 is: 193,797.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,855.30 : 342,040.66 = 140,432.60 : x
  2. Step 2: Convert to fraction form
    247,855.30/342,040.66 = 140,432.60/x
  3. Step 3: Cross multiply
    247,855.30x = 342,040.66 × 140,432.60
  4. Step 4: Simplify right side
    247,855.30x = 48,033,659,189.52
  5. Step 5: Solve for x
    x = 48,033,659,189.52/247,855.30
  6. Step 6: Final answer
    x = 193,797.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.