Home / 215,603,976.20-323,405,964.30-79,261,147.40

Finding the Fourth Proportional to 215,603,976.20, 323,405,964.30 and 79,261,147.40

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Solution

The fourth proportional to 215,603,976.20, 323,405,964.30 and 79,261,147.40 is: 118,891,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,603,976.20 : 323,405,964.30 = 79,261,147.40 : x
  2. Step 2: Convert to fraction form
    215,603,976.20/323,405,964.30 = 79,261,147.40/x
  3. Step 3: Cross multiply
    215,603,976.20x = 323,405,964.30 × 79,261,147.40
  4. Step 4: Simplify right side
    215,603,976.20x = 25,633,527,806,421,440
  5. Step 5: Solve for x
    x = 25,633,527,806,421,440/215,603,976.20
  6. Step 6: Final answer
    x = 118,891,721.10

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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.