Home / 215,810,012.80-323,715,019.20-193,135,196.80

Finding the Fourth Proportional to 215,810,012.80, 323,715,019.20 and 193,135,196.80

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Solution

The fourth proportional to 215,810,012.80, 323,715,019.20 and 193,135,196.80 is: 289,702,795.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,810,012.80 : 323,715,019.20 = 193,135,196.80 : x
  2. Step 2: Convert to fraction form
    215,810,012.80/323,715,019.20 = 193,135,196.80/x
  3. Step 3: Cross multiply
    215,810,012.80x = 323,715,019.20 × 193,135,196.80
  4. Step 4: Simplify right side
    215,810,012.80x = 62,520,763,940,307,784
  5. Step 5: Solve for x
    x = 62,520,763,940,307,784/215,810,012.80
  6. Step 6: Final answer
    x = 289,702,795.20

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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.