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Finding the Fourth Proportional to 220,270.80, 330,303 and 129,113.91

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Solution

The fourth proportional to 220,270.80, 330,303 and 129,113.91 is: 193,610.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,270.80 : 330,303 = 129,113.91 : x
  2. Step 2: Convert to fraction form
    220,270.80/330,303 = 129,113.91/x
  3. Step 3: Cross multiply
    220,270.80x = 330,303 × 129,113.91
  4. Step 4: Simplify right side
    220,270.80x = 42,646,711,814.73
  5. Step 5: Solve for x
    x = 42,646,711,814.73/220,270.80
  6. Step 6: Final answer
    x = 193,610.37

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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.