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Finding the Fourth Proportional to 259,085.98, 388,628.97 and 101,203.71

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Solution

The fourth proportional to 259,085.98, 388,628.97 and 101,203.71 is: 151,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,085.98 : 388,628.97 = 101,203.71 : x
  2. Step 2: Convert to fraction form
    259,085.98/388,628.97 = 101,203.71/x
  3. Step 3: Cross multiply
    259,085.98x = 388,628.97 × 101,203.71
  4. Step 4: Simplify right side
    259,085.98x = 39,330,693,577.48
  5. Step 5: Solve for x
    x = 39,330,693,577.48/259,085.98
  6. Step 6: Final answer
    x = 151,805.57

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Similar ratio
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1.5x scale

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.