Home / 278,819,387.40-418,229,081.10-163,859,003.40

Finding the Fourth Proportional to 278,819,387.40, 418,229,081.10 and 163,859,003.40

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Solution

The fourth proportional to 278,819,387.40, 418,229,081.10 and 163,859,003.40 is: 245,788,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,819,387.40 : 418,229,081.10 = 163,859,003.40 : x
  2. Step 2: Convert to fraction form
    278,819,387.40/418,229,081.10 = 163,859,003.40/x
  3. Step 3: Cross multiply
    278,819,387.40x = 418,229,081.10 × 163,859,003.40
  4. Step 4: Simplify right side
    278,819,387.40x = 68,530,600,421,943,784
  5. Step 5: Solve for x
    x = 68,530,600,421,943,784/278,819,387.40
  6. Step 6: Final answer
    x = 245,788,505.10

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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.