Home / 387,780.13-582,215.16-198,376.36

Finding the Fourth Proportional to 387,780.13, 582,215.16 and 198,376.36

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Solution

The fourth proportional to 387,780.13, 582,215.16 and 198,376.36 is: 297,843.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,780.13 : 582,215.16 = 198,376.36 : x
  2. Step 2: Convert to fraction form
    387,780.13/582,215.16 = 198,376.36/x
  3. Step 3: Cross multiply
    387,780.13x = 582,215.16 × 198,376.36
  4. Step 4: Simplify right side
    387,780.13x = 115,497,724,641.27
  5. Step 5: Solve for x
    x = 115,497,724,641.27/387,780.13
  6. Step 6: Final answer
    x = 297,843.33

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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.