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Finding the Fourth Proportional to 221,359.33, 305,437.72 and 124,549.75

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Solution

The fourth proportional to 221,359.33, 305,437.72 and 124,549.75 is: 171,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,359.33 : 305,437.72 = 124,549.75 : x
  2. Step 2: Convert to fraction form
    221,359.33/305,437.72 = 124,549.75/x
  3. Step 3: Cross multiply
    221,359.33x = 305,437.72 × 124,549.75
  4. Step 4: Simplify right side
    221,359.33x = 38,042,190,139.38
  5. Step 5: Solve for x
    x = 38,042,190,139.38/221,359.33
  6. Step 6: Final answer
    x = 171,857.18

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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.