Home / 208,405,177.45-312,703,229.72-90,266,072.20

Finding the Fourth Proportional to 208,405,177.45, 312,703,229.72 and 90,266,072.20

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Solution

The fourth proportional to 208,405,177.45, 312,703,229.72 and 90,266,072.20 is: 135,440,456.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,405,177.45 : 312,703,229.72 = 90,266,072.20 : x
  2. Step 2: Convert to fraction form
    208,405,177.45/312,703,229.72 = 90,266,072.20/x
  3. Step 3: Cross multiply
    208,405,177.45x = 312,703,229.72 × 90,266,072.20
  4. Step 4: Simplify right side
    208,405,177.45x = 28,226,492,310,015,320
  5. Step 5: Solve for x
    x = 28,226,492,310,015,320/208,405,177.45
  6. Step 6: Final answer
    x = 135,440,456.21

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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.