Home / 387,189.47-580,653.20-147,246.35

Finding the Fourth Proportional to 387,189.47, 580,653.20 and 147,246.35

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Solution

The fourth proportional to 387,189.47, 580,653.20 and 147,246.35 is: 220,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,189.47 : 580,653.20 = 147,246.35 : x
  2. Step 2: Convert to fraction form
    387,189.47/580,653.20 = 147,246.35/x
  3. Step 3: Cross multiply
    387,189.47x = 580,653.20 × 147,246.35
  4. Step 4: Simplify right side
    387,189.47x = 85,499,065,906.36
  5. Step 5: Solve for x
    x = 85,499,065,906.36/387,189.47
  6. Step 6: Final answer
    x = 220,819.71

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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.