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Finding the Fourth Proportional to 217,250.40, 325,972.80 and 98,860.80

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Solution

The fourth proportional to 217,250.40, 325,972.80 and 98,860.80 is: 148,335.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,250.40 : 325,972.80 = 98,860.80 : x
  2. Step 2: Convert to fraction form
    217,250.40/325,972.80 = 98,860.80/x
  3. Step 3: Cross multiply
    217,250.40x = 325,972.80 × 98,860.80
  4. Step 4: Simplify right side
    217,250.40x = 32,225,931,786.24
  5. Step 5: Solve for x
    x = 32,225,931,786.24/217,250.40
  6. Step 6: Final answer
    x = 148,335.43

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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.