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Finding the Fourth Proportional to 219,530.95, 329,258.13 and 61,721.89

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Solution

The fourth proportional to 219,530.95, 329,258.13 and 61,721.89 is: 92,572.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,530.95 : 329,258.13 = 61,721.89 : x
  2. Step 2: Convert to fraction form
    219,530.95/329,258.13 = 61,721.89/x
  3. Step 3: Cross multiply
    219,530.95x = 329,258.13 × 61,721.89
  4. Step 4: Simplify right side
    219,530.95x = 20,322,434,081.47
  5. Step 5: Solve for x
    x = 20,322,434,081.47/219,530.95
  6. Step 6: Final answer
    x = 92,572.07

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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.