Home / 426,557.18-639,343.66-160,147.78

Finding the Fourth Proportional to 426,557.18, 639,343.66 and 160,147.78

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Solution

The fourth proportional to 426,557.18, 639,343.66 and 160,147.78 is: 240,036.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,557.18 : 639,343.66 = 160,147.78 : x
  2. Step 2: Convert to fraction form
    426,557.18/639,343.66 = 160,147.78/x
  3. Step 3: Cross multiply
    426,557.18x = 639,343.66 × 160,147.78
  4. Step 4: Simplify right side
    426,557.18x = 102,389,467,806.08
  5. Step 5: Solve for x
    x = 102,389,467,806.08/426,557.18
  6. Step 6: Final answer
    x = 240,036.91

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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.