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Finding the Fourth Proportional to 219,327.90, 329,121.45 and 144,663.90

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Solution

The fourth proportional to 219,327.90, 329,121.45 and 144,663.90 is: 217,081.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,327.90 : 329,121.45 = 144,663.90 : x
  2. Step 2: Convert to fraction form
    219,327.90/329,121.45 = 144,663.90/x
  3. Step 3: Cross multiply
    219,327.90x = 329,121.45 × 144,663.90
  4. Step 4: Simplify right side
    219,327.90x = 47,611,992,530.66
  5. Step 5: Solve for x
    x = 47,611,992,530.66/219,327.90
  6. Step 6: Final answer
    x = 217,081.33

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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.