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Finding the Fourth Proportional to 213,214.78, 319,823.34 and 88,555.78

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Solution

The fourth proportional to 213,214.78, 319,823.34 and 88,555.78 is: 132,834.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,214.78 : 319,823.34 = 88,555.78 : x
  2. Step 2: Convert to fraction form
    213,214.78/319,823.34 = 88,555.78/x
  3. Step 3: Cross multiply
    213,214.78x = 319,823.34 × 88,555.78
  4. Step 4: Simplify right side
    213,214.78x = 28,322,205,335.91
  5. Step 5: Solve for x
    x = 28,322,205,335.91/213,214.78
  6. Step 6: Final answer
    x = 132,834.16

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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.