Home / 261,418.12-392,009.82-74,385.16

Finding the Fourth Proportional to 261,418.12, 392,009.82 and 74,385.16

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Solution

The fourth proportional to 261,418.12, 392,009.82 and 74,385.16 is: 111,544.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,418.12 : 392,009.82 = 74,385.16 : x
  2. Step 2: Convert to fraction form
    261,418.12/392,009.82 = 74,385.16/x
  3. Step 3: Cross multiply
    261,418.12x = 392,009.82 × 74,385.16
  4. Step 4: Simplify right side
    261,418.12x = 29,159,713,182.27
  5. Step 5: Solve for x
    x = 29,159,713,182.27/261,418.12
  6. Step 6: Final answer
    x = 111,544.35

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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.