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Finding the Fourth Proportional to 261,732.87, 391,824.29 and 161,571.00

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Solution

The fourth proportional to 261,732.87, 391,824.29 and 161,571.00 is: 241,878.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,732.87 : 391,824.29 = 161,571.00 : x
  2. Step 2: Convert to fraction form
    261,732.87/391,824.29 = 161,571.00/x
  3. Step 3: Cross multiply
    261,732.87x = 391,824.29 × 161,571.00
  4. Step 4: Simplify right side
    261,732.87x = 63,307,443,324.02
  5. Step 5: Solve for x
    x = 63,307,443,324.02/261,732.87
  6. Step 6: Final answer
    x = 241,878.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.