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Finding the Fourth Proportional to 219,973, 329,959.52 and 79,731.76

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Solution

The fourth proportional to 219,973, 329,959.52 and 79,731.76 is: 119,597.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,973 : 329,959.52 = 79,731.76 : x
  2. Step 2: Convert to fraction form
    219,973/329,959.52 = 79,731.76/x
  3. Step 3: Cross multiply
    219,973x = 329,959.52 × 79,731.76
  4. Step 4: Simplify right side
    219,973x = 26,308,253,258.36
  5. Step 5: Solve for x
    x = 26,308,253,258.36/219,973
  6. Step 6: Final answer
    x = 119,597.65

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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.