Home / 387,824.13-582,281.12-198,420.36

Finding the Fourth Proportional to 387,824.13, 582,281.12 and 198,420.36

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Solution

The fourth proportional to 387,824.13, 582,281.12 and 198,420.36 is: 297,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,824.13 : 582,281.12 = 198,420.36 : x
  2. Step 2: Convert to fraction form
    387,824.13/582,281.12 = 198,420.36/x
  3. Step 3: Cross multiply
    387,824.13x = 582,281.12 × 198,420.36
  4. Step 4: Simplify right side
    387,824.13x = 115,536,428,564.68
  5. Step 5: Solve for x
    x = 115,536,428,564.68/387,824.13
  6. Step 6: Final answer
    x = 297,909.34

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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.