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Finding the Fourth Proportional to 261,901.74, 361,329.72 and 171,309.44

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Solution

The fourth proportional to 261,901.74, 361,329.72 and 171,309.44 is: 236,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,901.74 : 361,329.72 = 171,309.44 : x
  2. Step 2: Convert to fraction form
    261,901.74/361,329.72 = 171,309.44/x
  3. Step 3: Cross multiply
    261,901.74x = 361,329.72 × 171,309.44
  4. Step 4: Simplify right side
    261,901.74x = 61,899,191,988.56
  5. Step 5: Solve for x
    x = 61,899,191,988.56/261,901.74
  6. Step 6: Final answer
    x = 236,345.10

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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.