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Finding the Fourth Proportional to 312,757.60, 469,366.80 and 125,903.20

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Solution

The fourth proportional to 312,757.60, 469,366.80 and 125,903.20 is: 188,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,757.60 : 469,366.80 = 125,903.20 : x
  2. Step 2: Convert to fraction form
    312,757.60/469,366.80 = 125,903.20/x
  3. Step 3: Cross multiply
    312,757.60x = 469,366.80 × 125,903.20
  4. Step 4: Simplify right side
    312,757.60x = 59,094,782,093.76
  5. Step 5: Solve for x
    x = 59,094,782,093.76/312,757.60
  6. Step 6: Final answer
    x = 188,947.55

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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.