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Finding the Fourth Proportional to 261,572.70, 360,982.19 and 154,147.26

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Solution

The fourth proportional to 261,572.70, 360,982.19 and 154,147.26 is: 212,730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,572.70 : 360,982.19 = 154,147.26 : x
  2. Step 2: Convert to fraction form
    261,572.70/360,982.19 = 154,147.26/x
  3. Step 3: Cross multiply
    261,572.70x = 360,982.19 × 154,147.26
  4. Step 4: Simplify right side
    261,572.70x = 55,644,415,497.30
  5. Step 5: Solve for x
    x = 55,644,415,497.30/261,572.70
  6. Step 6: Final answer
    x = 212,730.21

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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.