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Finding the Fourth Proportional to 259,087.68, 388,631.51 and 101,205.42

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Solution

The fourth proportional to 259,087.68, 388,631.51 and 101,205.42 is: 151,808.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,087.68 : 388,631.51 = 101,205.42 : x
  2. Step 2: Convert to fraction form
    259,087.68/388,631.51 = 101,205.42/x
  3. Step 3: Cross multiply
    259,087.68x = 388,631.51 × 101,205.42
  4. Step 4: Simplify right side
    259,087.68x = 39,331,615,194.78
  5. Step 5: Solve for x
    x = 39,331,615,194.78/259,087.68
  6. Step 6: Final answer
    x = 151,808.13

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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.