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Finding the Fourth Proportional to 219,161.97, 328,752.33 and 86,071.08

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Solution

The fourth proportional to 219,161.97, 328,752.33 and 86,071.08 is: 129,110.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,161.97 : 328,752.33 = 86,071.08 : x
  2. Step 2: Convert to fraction form
    219,161.97/328,752.33 = 86,071.08/x
  3. Step 3: Cross multiply
    219,161.97x = 328,752.33 × 86,071.08
  4. Step 4: Simplify right side
    219,161.97x = 28,296,068,095.62
  5. Step 5: Solve for x
    x = 28,296,068,095.62/219,161.97
  6. Step 6: Final answer
    x = 129,110.30

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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.