Home / 289,278.40-433,723.20-131,425.60

Finding the Fourth Proportional to 289,278.40, 433,723.20 and 131,425.60

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Solution

The fourth proportional to 289,278.40, 433,723.20 and 131,425.60 is: 197,050.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,278.40 : 433,723.20 = 131,425.60 : x
  2. Step 2: Convert to fraction form
    289,278.40/433,723.20 = 131,425.60/x
  3. Step 3: Cross multiply
    289,278.40x = 433,723.20 × 131,425.60
  4. Step 4: Simplify right side
    289,278.40x = 57,002,331,793.92
  5. Step 5: Solve for x
    x = 57,002,331,793.92/289,278.40
  6. Step 6: Final answer
    x = 197,050.08

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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.