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Finding the Fourth Proportional to 219,764.46, 329,646.66 and 79,490.28

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Solution

The fourth proportional to 219,764.46, 329,646.66 and 79,490.28 is: 119,235.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,764.46 : 329,646.66 = 79,490.28 : x
  2. Step 2: Convert to fraction form
    219,764.46/329,646.66 = 79,490.28/x
  3. Step 3: Cross multiply
    219,764.46x = 329,646.66 × 79,490.28
  4. Step 4: Simplify right side
    219,764.46x = 26,203,705,304.46
  5. Step 5: Solve for x
    x = 26,203,705,304.46/219,764.46
  6. Step 6: Final answer
    x = 119,235.41

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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.