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Finding the Fourth Proportional to 259,251.84, 388,883.88 and 69,712.56

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Solution

The fourth proportional to 259,251.84, 388,883.88 and 69,712.56 is: 104,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,251.84 : 388,883.88 = 69,712.56 : x
  2. Step 2: Convert to fraction form
    259,251.84/388,883.88 = 69,712.56/x
  3. Step 3: Cross multiply
    259,251.84x = 388,883.88 × 69,712.56
  4. Step 4: Simplify right side
    259,251.84x = 27,110,090,817.53
  5. Step 5: Solve for x
    x = 27,110,090,817.53/259,251.84
  6. Step 6: Final answer
    x = 104,570.49

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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.