Home / 257,977.20-387,115.28-108,204.16

Finding the Fourth Proportional to 257,977.20, 387,115.28 and 108,204.16

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Solution

The fourth proportional to 257,977.20, 387,115.28 and 108,204.16 is: 162,368.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,977.20 : 387,115.28 = 108,204.16 : x
  2. Step 2: Convert to fraction form
    257,977.20/387,115.28 = 108,204.16/x
  3. Step 3: Cross multiply
    257,977.20x = 387,115.28 × 108,204.16
  4. Step 4: Simplify right side
    257,977.20x = 41,887,483,695.56
  5. Step 5: Solve for x
    x = 41,887,483,695.56/257,977.20
  6. Step 6: Final answer
    x = 162,368.94

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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.