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Finding the Fourth Proportional to 220,240.80, 308,959.20 and 220,240.80

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Solution

The fourth proportional to 220,240.80, 308,959.20 and 220,240.80 is: 308,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,240.80 : 308,959.20 = 220,240.80 : x
  2. Step 2: Convert to fraction form
    220,240.80/308,959.20 = 220,240.80/x
  3. Step 3: Cross multiply
    220,240.80x = 308,959.20 × 220,240.80
  4. Step 4: Simplify right side
    220,240.80x = 68,045,421,375.36
  5. Step 5: Solve for x
    x = 68,045,421,375.36/220,240.80
  6. Step 6: Final answer
    x = 308,959.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.