Home / 257,968.40-387,244.20-199,065.20

Finding the Fourth Proportional to 257,968.40, 387,244.20 and 199,065.20

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Solution

The fourth proportional to 257,968.40, 387,244.20 and 199,065.20 is: 298,822.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,968.40 : 387,244.20 = 199,065.20 : x
  2. Step 2: Convert to fraction form
    257,968.40/387,244.20 = 199,065.20/x
  3. Step 3: Cross multiply
    257,968.40x = 387,244.20 × 199,065.20
  4. Step 4: Simplify right side
    257,968.40x = 77,086,844,121.84
  5. Step 5: Solve for x
    x = 77,086,844,121.84/257,968.40
  6. Step 6: Final answer
    x = 298,822.82

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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.