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Finding the Fourth Proportional to 219,902.30, 329,853.45 and 143,794.70

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Solution

The fourth proportional to 219,902.30, 329,853.45 and 143,794.70 is: 215,692.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,902.30 : 329,853.45 = 143,794.70 : x
  2. Step 2: Convert to fraction form
    219,902.30/329,853.45 = 143,794.70/x
  3. Step 3: Cross multiply
    219,902.30x = 329,853.45 × 143,794.70
  4. Step 4: Simplify right side
    219,902.30x = 47,431,177,886.72
  5. Step 5: Solve for x
    x = 47,431,177,886.72/219,902.30
  6. Step 6: Final answer
    x = 215,692.05

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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.