Home / 438,010.80-657,016.20-272,122.80

Finding the Fourth Proportional to 438,010.80, 657,016.20 and 272,122.80

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Solution

The fourth proportional to 438,010.80, 657,016.20 and 272,122.80 is: 408,184.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,010.80 : 657,016.20 = 272,122.80 : x
  2. Step 2: Convert to fraction form
    438,010.80/657,016.20 = 272,122.80/x
  3. Step 3: Cross multiply
    438,010.80x = 657,016.20 × 272,122.80
  4. Step 4: Simplify right side
    438,010.80x = 178,789,087,989.36
  5. Step 5: Solve for x
    x = 178,789,087,989.36/438,010.80
  6. Step 6: Final answer
    x = 408,184.20

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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.