Home / 515,387,835.08-772,981,977.90-200,253,323.42

Finding the Fourth Proportional to 515,387,835.08, 772,981,977.90 and 200,253,323.42

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Solution

The fourth proportional to 515,387,835.08, 772,981,977.90 and 200,253,323.42 is: 300,341,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,387,835.08 : 772,981,977.90 = 200,253,323.42 : x
  2. Step 2: Convert to fraction form
    515,387,835.08/772,981,977.90 = 200,253,323.42/x
  3. Step 3: Cross multiply
    515,387,835.08x = 772,981,977.90 × 200,253,323.42
  4. Step 4: Simplify right side
    515,387,835.08x = 154,792,210,018,239,968
  5. Step 5: Solve for x
    x = 154,792,210,018,239,968/515,387,835.08
  6. Step 6: Final answer
    x = 300,341,217.78

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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.