Home / 257,821.80-386,743.17-122,816.46

Finding the Fourth Proportional to 257,821.80, 386,743.17 and 122,816.46

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Solution

The fourth proportional to 257,821.80, 386,743.17 and 122,816.46 is: 184,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,821.80 : 386,743.17 = 122,816.46 : x
  2. Step 2: Convert to fraction form
    257,821.80/386,743.17 = 122,816.46/x
  3. Step 3: Cross multiply
    257,821.80x = 386,743.17 × 122,816.46
  4. Step 4: Simplify right side
    257,821.80x = 47,498,427,068.58
  5. Step 5: Solve for x
    x = 47,498,427,068.58/257,821.80
  6. Step 6: Final answer
    x = 184,229.68

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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.