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Finding the Fourth Proportional to 221,396.70, 332,143.65 and 109,130.70

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Solution

The fourth proportional to 221,396.70, 332,143.65 and 109,130.70 is: 163,720.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,396.70 : 332,143.65 = 109,130.70 : x
  2. Step 2: Convert to fraction form
    221,396.70/332,143.65 = 109,130.70/x
  3. Step 3: Cross multiply
    221,396.70x = 332,143.65 × 109,130.70
  4. Step 4: Simplify right side
    221,396.70x = 36,247,069,025.06
  5. Step 5: Solve for x
    x = 36,247,069,025.06/221,396.70
  6. Step 6: Final answer
    x = 163,720.01

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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.