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Finding the Fourth Proportional to 219,964.20, 329,168.70 and 149,980.20

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Solution

The fourth proportional to 219,964.20, 329,168.70 and 149,980.20 is: 224,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,964.20 : 329,168.70 = 149,980.20 : x
  2. Step 2: Convert to fraction form
    219,964.20/329,168.70 = 149,980.20/x
  3. Step 3: Cross multiply
    219,964.20x = 329,168.70 × 149,980.20
  4. Step 4: Simplify right side
    219,964.20x = 49,368,787,459.74
  5. Step 5: Solve for x
    x = 49,368,787,459.74/219,964.20
  6. Step 6: Final answer
    x = 224,440.10

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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.