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Finding the Fourth Proportional to 221,497.38, 305,562.54 and 130,791.54

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Solution

The fourth proportional to 221,497.38, 305,562.54 and 130,791.54 is: 180,431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,497.38 : 305,562.54 = 130,791.54 : x
  2. Step 2: Convert to fraction form
    221,497.38/305,562.54 = 130,791.54/x
  3. Step 3: Cross multiply
    221,497.38x = 305,562.54 × 130,791.54
  4. Step 4: Simplify right side
    221,497.38x = 39,964,995,172.91
  5. Step 5: Solve for x
    x = 39,964,995,172.91/221,497.38
  6. Step 6: Final answer
    x = 180,431.01

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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.