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Finding the Fourth Proportional to 281,929.60, 422,913.60 and 89,788.80

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Solution

The fourth proportional to 281,929.60, 422,913.60 and 89,788.80 is: 134,689.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,929.60 : 422,913.60 = 89,788.80 : x
  2. Step 2: Convert to fraction form
    281,929.60/422,913.60 = 89,788.80/x
  3. Step 3: Cross multiply
    281,929.60x = 422,913.60 × 89,788.80
  4. Step 4: Simplify right side
    281,929.60x = 37,972,904,647.68
  5. Step 5: Solve for x
    x = 37,972,904,647.68/281,929.60
  6. Step 6: Final answer
    x = 134,689.31

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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.