Home / 278,819,286.90-418,228,930.35-163,858,902.90

Finding the Fourth Proportional to 278,819,286.90, 418,228,930.35 and 163,858,902.90

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Solution

The fourth proportional to 278,819,286.90, 418,228,930.35 and 163,858,902.90 is: 245,788,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,819,286.90 : 418,228,930.35 = 163,858,902.90 : x
  2. Step 2: Convert to fraction form
    278,819,286.90/418,228,930.35 = 163,858,902.90/x
  3. Step 3: Cross multiply
    278,819,286.90x = 418,228,930.35 × 163,858,902.90
  4. Step 4: Simplify right side
    278,819,286.90x = 68,530,533,688,191,520
  5. Step 5: Solve for x
    x = 68,530,533,688,191,520/278,819,286.90
  6. Step 6: Final answer
    x = 245,788,354.35

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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.