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Finding the Fourth Proportional to 220,220.72, 303,925.79 and 123,424.10

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Solution

The fourth proportional to 220,220.72, 303,925.79 and 123,424.10 is: 170,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,220.72 : 303,925.79 = 123,424.10 : x
  2. Step 2: Convert to fraction form
    220,220.72/303,925.79 = 123,424.10/x
  3. Step 3: Cross multiply
    220,220.72x = 303,925.79 × 123,424.10
  4. Step 4: Simplify right side
    220,220.72x = 37,511,767,097.54
  5. Step 5: Solve for x
    x = 37,511,767,097.54/220,220.72
  6. Step 6: Final answer
    x = 170,337.14

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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.