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Finding the Fourth Proportional to 307,947.80, 461,921.70 and 83,342.90

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Solution

The fourth proportional to 307,947.80, 461,921.70 and 83,342.90 is: 125,014.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,947.80 : 461,921.70 = 83,342.90 : x
  2. Step 2: Convert to fraction form
    307,947.80/461,921.70 = 83,342.90/x
  3. Step 3: Cross multiply
    307,947.80x = 461,921.70 × 83,342.90
  4. Step 4: Simplify right side
    307,947.80x = 38,497,894,050.93
  5. Step 5: Solve for x
    x = 38,497,894,050.93/307,947.80
  6. Step 6: Final answer
    x = 125,014.35

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Similar ratio
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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.