Home / 261,046.10-391,605.60-111,285.20

Finding the Fourth Proportional to 261,046.10, 391,605.60 and 111,285.20

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Solution

The fourth proportional to 261,046.10, 391,605.60 and 111,285.20 is: 166,943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,046.10 : 391,605.60 = 111,285.20 : x
  2. Step 2: Convert to fraction form
    261,046.10/391,605.60 = 111,285.20/x
  3. Step 3: Cross multiply
    261,046.10x = 391,605.60 × 111,285.20
  4. Step 4: Simplify right side
    261,046.10x = 43,579,907,517.12
  5. Step 5: Solve for x
    x = 43,579,907,517.12/261,046.10
  6. Step 6: Final answer
    x = 166,943.34

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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.