Home / 287,568.20-431,352.30-145,850.60

Finding the Fourth Proportional to 287,568.20, 431,352.30 and 145,850.60

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Solution

The fourth proportional to 287,568.20, 431,352.30 and 145,850.60 is: 218,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,568.20 : 431,352.30 = 145,850.60 : x
  2. Step 2: Convert to fraction form
    287,568.20/431,352.30 = 145,850.60/x
  3. Step 3: Cross multiply
    287,568.20x = 431,352.30 × 145,850.60
  4. Step 4: Simplify right side
    287,568.20x = 62,912,991,766.38
  5. Step 5: Solve for x
    x = 62,912,991,766.38/287,568.20
  6. Step 6: Final answer
    x = 218,775.90

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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.