Home / 305,042,709.08-420,959,209.79-165,813,470.85

Finding the Fourth Proportional to 305,042,709.08, 420,959,209.79 and 165,813,470.85

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Solution

The fourth proportional to 305,042,709.08, 420,959,209.79 and 165,813,470.85 is: 228,822,737.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,042,709.08 : 420,959,209.79 = 165,813,470.85 : x
  2. Step 2: Convert to fraction form
    305,042,709.08/420,959,209.79 = 165,813,470.85/x
  3. Step 3: Cross multiply
    305,042,709.08x = 420,959,209.79 × 165,813,470.85
  4. Step 4: Simplify right side
    305,042,709.08x = 69,800,707,660,724,136
  5. Step 5: Solve for x
    x = 69,800,707,660,724,136/305,042,709.08
  6. Step 6: Final answer
    x = 228,822,737.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.