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Finding the Fourth Proportional to 219,799.72, 329,690.46 and 101,431.72

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Solution

The fourth proportional to 219,799.72, 329,690.46 and 101,431.72 is: 152,143.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,799.72 : 329,690.46 = 101,431.72 : x
  2. Step 2: Convert to fraction form
    219,799.72/329,690.46 = 101,431.72/x
  3. Step 3: Cross multiply
    219,799.72x = 329,690.46 × 101,431.72
  4. Step 4: Simplify right side
    219,799.72x = 33,441,070,425.39
  5. Step 5: Solve for x
    x = 33,441,070,425.39/219,799.72
  6. Step 6: Final answer
    x = 152,143.37

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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.