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Finding the Fourth Proportional to 219,418.86, 329,139.58 and 61,659.62

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Solution

The fourth proportional to 219,418.86, 329,139.58 and 61,659.62 is: 92,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,418.86 : 329,139.58 = 61,659.62 : x
  2. Step 2: Convert to fraction form
    219,418.86/329,139.58 = 61,659.62/x
  3. Step 3: Cross multiply
    219,418.86x = 329,139.58 × 61,659.62
  4. Step 4: Simplify right side
    219,418.86x = 20,294,621,429.76
  5. Step 5: Solve for x
    x = 20,294,621,429.76/219,418.86
  6. Step 6: Final answer
    x = 92,492.60

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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.