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Finding the Fourth Proportional to 219,231.88, 328,722.22 and 67,389.42

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Solution

The fourth proportional to 219,231.88, 328,722.22 and 67,389.42 is: 101,045.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,231.88 : 328,722.22 = 67,389.42 : x
  2. Step 2: Convert to fraction form
    219,231.88/328,722.22 = 67,389.42/x
  3. Step 3: Cross multiply
    219,231.88x = 328,722.22 × 67,389.42
  4. Step 4: Simplify right side
    219,231.88x = 22,152,399,746.91
  5. Step 5: Solve for x
    x = 22,152,399,746.91/219,231.88
  6. Step 6: Final answer
    x = 101,045.52

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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.