Home / 393,845.31-543,287.67-258,098.22

Finding the Fourth Proportional to 393,845.31, 543,287.67 and 258,098.22

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Solution

The fourth proportional to 393,845.31, 543,287.67 and 258,098.22 is: 356,032.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,845.31 : 543,287.67 = 258,098.22 : x
  2. Step 2: Convert to fraction form
    393,845.31/543,287.67 = 258,098.22/x
  3. Step 3: Cross multiply
    393,845.31x = 543,287.67 × 258,098.22
  4. Step 4: Simplify right side
    393,845.31x = 140,221,580,574.95
  5. Step 5: Solve for x
    x = 140,221,580,574.95/393,845.31
  6. Step 6: Final answer
    x = 356,032.12

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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.