Home / 325,541.60-487,729.20-288,216.80

Finding the Fourth Proportional to 325,541.60, 487,729.20 and 288,216.80

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Solution

The fourth proportional to 325,541.60, 487,729.20 and 288,216.80 is: 431,808.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,541.60 : 487,729.20 = 288,216.80 : x
  2. Step 2: Convert to fraction form
    325,541.60/487,729.20 = 288,216.80/x
  3. Step 3: Cross multiply
    325,541.60x = 487,729.20 × 288,216.80
  4. Step 4: Simplify right side
    325,541.60x = 140,571,749,290.56
  5. Step 5: Solve for x
    x = 140,571,749,290.56/325,541.60
  6. Step 6: Final answer
    x = 431,808.87

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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.