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Finding the Fourth Proportional to 283,358.73, 391,034.43 and 154,295.20

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Solution

The fourth proportional to 283,358.73, 391,034.43 and 154,295.20 is: 212,927.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,358.73 : 391,034.43 = 154,295.20 : x
  2. Step 2: Convert to fraction form
    283,358.73/391,034.43 = 154,295.20/x
  3. Step 3: Cross multiply
    283,358.73x = 391,034.43 × 154,295.20
  4. Step 4: Simplify right side
    283,358.73x = 60,334,735,583.74
  5. Step 5: Solve for x
    x = 60,334,735,583.74/283,358.73
  6. Step 6: Final answer
    x = 212,927.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.