Home / 412,276.80-618,350.40-145,999.20

Finding the Fourth Proportional to 412,276.80, 618,350.40 and 145,999.20

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Solution

The fourth proportional to 412,276.80, 618,350.40 and 145,999.20 is: 218,975.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,276.80 : 618,350.40 = 145,999.20 : x
  2. Step 2: Convert to fraction form
    412,276.80/618,350.40 = 145,999.20/x
  3. Step 3: Cross multiply
    412,276.80x = 618,350.40 × 145,999.20
  4. Step 4: Simplify right side
    412,276.80x = 90,278,663,719.68
  5. Step 5: Solve for x
    x = 90,278,663,719.68/412,276.80
  6. Step 6: Final answer
    x = 218,975.85

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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.