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Finding the Fourth Proportional to 272,006.80, 408,010.20 and 122,189.20

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Solution

The fourth proportional to 272,006.80, 408,010.20 and 122,189.20 is: 183,283.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,006.80 : 408,010.20 = 122,189.20 : x
  2. Step 2: Convert to fraction form
    272,006.80/408,010.20 = 122,189.20/x
  3. Step 3: Cross multiply
    272,006.80x = 408,010.20 × 122,189.20
  4. Step 4: Simplify right side
    272,006.80x = 49,854,439,929.84
  5. Step 5: Solve for x
    x = 49,854,439,929.84/272,006.80
  6. Step 6: Final answer
    x = 183,283.80

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1.5x scale

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.