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Finding the Fourth Proportional to 219,165.66, 328,763.22 and 76,993.65

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Solution

The fourth proportional to 219,165.66, 328,763.22 and 76,993.65 is: 115,495.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,165.66 : 328,763.22 = 76,993.65 : x
  2. Step 2: Convert to fraction form
    219,165.66/328,763.22 = 76,993.65/x
  3. Step 3: Cross multiply
    219,165.66x = 328,763.22 × 76,993.65
  4. Step 4: Simplify right side
    219,165.66x = 25,312,680,293.55
  5. Step 5: Solve for x
    x = 25,312,680,293.55/219,165.66
  6. Step 6: Final answer
    x = 115,495.65

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1.5x scale

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.