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Finding the Fourth Proportional to 261,135.56, 360,443.99 and 170,505.61

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Solution

The fourth proportional to 261,135.56, 360,443.99 and 170,505.61 is: 235,347.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,135.56 : 360,443.99 = 170,505.61 : x
  2. Step 2: Convert to fraction form
    261,135.56/360,443.99 = 170,505.61/x
  3. Step 3: Cross multiply
    261,135.56x = 360,443.99 × 170,505.61
  4. Step 4: Simplify right side
    261,135.56x = 61,457,721,910.94
  5. Step 5: Solve for x
    x = 61,457,721,910.94/261,135.56
  6. Step 6: Final answer
    x = 235,347.96

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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.