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Finding the Fourth Proportional to 219,302.20, 328,965.04 and 69,553.86

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Solution

The fourth proportional to 219,302.20, 328,965.04 and 69,553.86 is: 104,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,302.20 : 328,965.04 = 69,553.86 : x
  2. Step 2: Convert to fraction form
    219,302.20/328,965.04 = 69,553.86/x
  3. Step 3: Cross multiply
    219,302.20x = 328,965.04 × 69,553.86
  4. Step 4: Simplify right side
    219,302.20x = 22,880,788,337.05
  5. Step 5: Solve for x
    x = 22,880,788,337.05/219,302.20
  6. Step 6: Final answer
    x = 104,334.51

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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.