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Finding the Fourth Proportional to 220,071.01, 303,724.81 and 129,422.59

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Solution

The fourth proportional to 220,071.01, 303,724.81 and 129,422.59 is: 178,618.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,071.01 : 303,724.81 = 129,422.59 : x
  2. Step 2: Convert to fraction form
    220,071.01/303,724.81 = 129,422.59/x
  3. Step 3: Cross multiply
    220,071.01x = 303,724.81 × 129,422.59
  4. Step 4: Simplify right side
    220,071.01x = 39,308,851,557.46
  5. Step 5: Solve for x
    x = 39,308,851,557.46/220,071.01
  6. Step 6: Final answer
    x = 178,618.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.