Home / 217,515.97-326,235.07-138,395.17

Finding the Fourth Proportional to 217,515.97, 326,235.07 and 138,395.17

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Solution

The fourth proportional to 217,515.97, 326,235.07 and 138,395.17 is: 207,568.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,515.97 : 326,235.07 = 138,395.17 : x
  2. Step 2: Convert to fraction form
    217,515.97/326,235.07 = 138,395.17/x
  3. Step 3: Cross multiply
    217,515.97x = 326,235.07 × 138,395.17
  4. Step 4: Simplify right side
    217,515.97x = 45,149,357,972.61
  5. Step 5: Solve for x
    x = 45,149,357,972.61/217,515.97
  6. Step 6: Final answer
    x = 207,568.01

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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.