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Finding the Fourth Proportional to 219,799.29, 329,689.02 and 91,662.81

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Solution

The fourth proportional to 219,799.29, 329,689.02 and 91,662.81 is: 137,490.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,799.29 : 329,689.02 = 91,662.81 : x
  2. Step 2: Convert to fraction form
    219,799.29/329,689.02 = 91,662.81/x
  3. Step 3: Cross multiply
    219,799.29x = 329,689.02 × 91,662.81
  4. Step 4: Simplify right side
    219,799.29x = 30,220,220,350.90
  5. Step 5: Solve for x
    x = 30,220,220,350.90/219,799.29
  6. Step 6: Final answer
    x = 137,490.08

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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.