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Finding the Fourth Proportional to 247,909.95, 342,086.31 and 145,912.86

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Solution

The fourth proportional to 247,909.95, 342,086.31 and 145,912.86 is: 201,342.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,909.95 : 342,086.31 = 145,912.86 : x
  2. Step 2: Convert to fraction form
    247,909.95/342,086.31 = 145,912.86/x
  3. Step 3: Cross multiply
    247,909.95x = 342,086.31 × 145,912.86
  4. Step 4: Simplify right side
    247,909.95x = 49,914,791,858.95
  5. Step 5: Solve for x
    x = 49,914,791,858.95/247,909.95
  6. Step 6: Final answer
    x = 201,342.43

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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.