Home / 257,985.21-387,127.26-108,212.16

Finding the Fourth Proportional to 257,985.21, 387,127.26 and 108,212.16

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Solution

The fourth proportional to 257,985.21, 387,127.26 and 108,212.16 is: 162,380.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,985.21 : 387,127.26 = 108,212.16 : x
  2. Step 2: Convert to fraction form
    257,985.21/387,127.26 = 108,212.16/x
  3. Step 3: Cross multiply
    257,985.21x = 387,127.26 × 108,212.16
  4. Step 4: Simplify right side
    257,985.21x = 41,891,876,999.48
  5. Step 5: Solve for x
    x = 41,891,876,999.48/257,985.21
  6. Step 6: Final answer
    x = 162,380.92

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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.