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Finding the Fourth Proportional to 219,799.38, 329,740.03 and 99,864.74

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Solution

The fourth proportional to 219,799.38, 329,740.03 and 99,864.74 is: 149,815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,799.38 : 329,740.03 = 99,864.74 : x
  2. Step 2: Convert to fraction form
    219,799.38/329,740.03 = 99,864.74/x
  3. Step 3: Cross multiply
    219,799.38x = 329,740.03 × 99,864.74
  4. Step 4: Simplify right side
    219,799.38x = 32,929,402,363.54
  5. Step 5: Solve for x
    x = 32,929,402,363.54/219,799.38
  6. Step 6: Final answer
    x = 149,815.72

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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.