Home / 217,728.45-326,592.70-67,981.56

Finding the Fourth Proportional to 217,728.45, 326,592.70 and 67,981.56

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Solution

The fourth proportional to 217,728.45, 326,592.70 and 67,981.56 is: 101,972.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,728.45 : 326,592.70 = 67,981.56 : x
  2. Step 2: Convert to fraction form
    217,728.45/326,592.70 = 67,981.56/x
  3. Step 3: Cross multiply
    217,728.45x = 326,592.70 × 67,981.56
  4. Step 4: Simplify right side
    217,728.45x = 22,202,281,673.02
  5. Step 5: Solve for x
    x = 22,202,281,673.02/217,728.45
  6. Step 6: Final answer
    x = 101,972.35

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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.