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Finding the Fourth Proportional to 259,087.71, 388,631.57 and 101,205.45

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Solution

The fourth proportional to 259,087.71, 388,631.57 and 101,205.45 is: 151,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,087.71 : 388,631.57 = 101,205.45 : x
  2. Step 2: Convert to fraction form
    259,087.71/388,631.57 = 101,205.45/x
  3. Step 3: Cross multiply
    259,087.71x = 388,631.57 × 101,205.45
  4. Step 4: Simplify right side
    259,087.71x = 39,331,632,420.03
  5. Step 5: Solve for x
    x = 39,331,632,420.03/259,087.71
  6. Step 6: Final answer
    x = 151,808.18

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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.