Home / 288,052.20-431,732.70-147,738.60

Finding the Fourth Proportional to 288,052.20, 431,732.70 and 147,738.60

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Solution

The fourth proportional to 288,052.20, 431,732.70 and 147,738.60 is: 221,430.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,052.20 : 431,732.70 = 147,738.60 : x
  2. Step 2: Convert to fraction form
    288,052.20/431,732.70 = 147,738.60/x
  3. Step 3: Cross multiply
    288,052.20x = 431,732.70 × 147,738.60
  4. Step 4: Simplify right side
    288,052.20x = 63,783,584,672.22
  5. Step 5: Solve for x
    x = 63,783,584,672.22/288,052.20
  6. Step 6: Final answer
    x = 221,430.65

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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.