Home / 205,290.28-283,147.14-138,209.32

Finding the Fourth Proportional to 205,290.28, 283,147.14 and 138,209.32

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Solution

The fourth proportional to 205,290.28, 283,147.14 and 138,209.32 is: 190,625.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,290.28 : 283,147.14 = 138,209.32 : x
  2. Step 2: Convert to fraction form
    205,290.28/283,147.14 = 138,209.32/x
  3. Step 3: Cross multiply
    205,290.28x = 283,147.14 × 138,209.32
  4. Step 4: Simplify right side
    205,290.28x = 39,133,573,679.34
  5. Step 5: Solve for x
    x = 39,133,573,679.34/205,290.28
  6. Step 6: Final answer
    x = 190,625.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.