Home / 818,147.20-1,227,289.92-257,342.08

Finding the Fourth Proportional to 818,147.20, 1,227,289.92 and 257,342.08

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Solution

The fourth proportional to 818,147.20, 1,227,289.92 and 257,342.08 is: 386,034.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,147.20 : 1,227,289.92 = 257,342.08 : x
  2. Step 2: Convert to fraction form
    818,147.20/1,227,289.92 = 257,342.08/x
  3. Step 3: Cross multiply
    818,147.20x = 1,227,289.92 × 257,342.08
  4. Step 4: Simplify right side
    818,147.20x = 315,833,340,775.83
  5. Step 5: Solve for x
    x = 315,833,340,775.83/818,147.20
  6. Step 6: Final answer
    x = 386,034.86

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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.