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Finding the Fourth Proportional to 220,089.06, 303,724.16 and 129,448.84

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Solution

The fourth proportional to 220,089.06, 303,724.16 and 129,448.84 is: 178,640.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,089.06 : 303,724.16 = 129,448.84 : x
  2. Step 2: Convert to fraction form
    220,089.06/303,724.16 = 129,448.84/x
  3. Step 3: Cross multiply
    220,089.06x = 303,724.16 × 129,448.84
  4. Step 4: Simplify right side
    220,089.06x = 39,316,740,191.97
  5. Step 5: Solve for x
    x = 39,316,740,191.97/220,089.06
  6. Step 6: Final answer
    x = 178,640.14

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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.