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Finding the Fourth Proportional to 219,118.84, 328,727.48 and 69,368.12

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Solution

The fourth proportional to 219,118.84, 328,727.48 and 69,368.12 is: 104,067.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,118.84 : 328,727.48 = 69,368.12 : x
  2. Step 2: Convert to fraction form
    219,118.84/328,727.48 = 69,368.12/x
  3. Step 3: Cross multiply
    219,118.84x = 328,727.48 × 69,368.12
  4. Step 4: Simplify right side
    219,118.84x = 22,803,207,279.94
  5. Step 5: Solve for x
    x = 22,803,207,279.94/219,118.84
  6. Step 6: Final answer
    x = 104,067.76

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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.