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Finding the Fourth Proportional to 283,841.73, 391,698.72 and 154,779.89

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Solution

The fourth proportional to 283,841.73, 391,698.72 and 154,779.89 is: 213,594.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,841.73 : 391,698.72 = 154,779.89 : x
  2. Step 2: Convert to fraction form
    283,841.73/391,698.72 = 154,779.89/x
  3. Step 3: Cross multiply
    283,841.73x = 391,698.72 × 154,779.89
  4. Step 4: Simplify right side
    283,841.73x = 60,627,082,836.25
  5. Step 5: Solve for x
    x = 60,627,082,836.25/283,841.73
  6. Step 6: Final answer
    x = 213,594.68

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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.