Home / 438,002.20-657,003.30-122,458.60

Finding the Fourth Proportional to 438,002.20, 657,003.30 and 122,458.60

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Solution

The fourth proportional to 438,002.20, 657,003.30 and 122,458.60 is: 183,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,002.20 : 657,003.30 = 122,458.60 : x
  2. Step 2: Convert to fraction form
    438,002.20/657,003.30 = 122,458.60/x
  3. Step 3: Cross multiply
    438,002.20x = 657,003.30 × 122,458.60
  4. Step 4: Simplify right side
    438,002.20x = 80,455,704,313.38
  5. Step 5: Solve for x
    x = 80,455,704,313.38/438,002.20
  6. Step 6: Final answer
    x = 183,687.90

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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.