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Finding the Fourth Proportional to 219,641.55, 329,460.70 and 61,866.51

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Solution

The fourth proportional to 219,641.55, 329,460.70 and 61,866.51 is: 92,799.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,641.55 : 329,460.70 = 61,866.51 : x
  2. Step 2: Convert to fraction form
    219,641.55/329,460.70 = 61,866.51/x
  3. Step 3: Cross multiply
    219,641.55x = 329,460.70 × 61,866.51
  4. Step 4: Simplify right side
    219,641.55x = 20,382,583,691.16
  5. Step 5: Solve for x
    x = 20,382,583,691.16/219,641.55
  6. Step 6: Final answer
    x = 92,799.31

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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.