Home / 305,042,709.84-420,959,210.82-165,813,471.60

Finding the Fourth Proportional to 305,042,709.84, 420,959,210.82 and 165,813,471.60

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Solution

The fourth proportional to 305,042,709.84, 420,959,210.82 and 165,813,471.60 is: 228,822,738.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,042,709.84 : 420,959,210.82 = 165,813,471.60 : x
  2. Step 2: Convert to fraction form
    305,042,709.84/420,959,210.82 = 165,813,471.60/x
  3. Step 3: Cross multiply
    305,042,709.84x = 420,959,210.82 × 165,813,471.60
  4. Step 4: Simplify right side
    305,042,709.84x = 69,800,708,148,060,480
  5. Step 5: Solve for x
    x = 69,800,708,148,060,480/305,042,709.84
  6. Step 6: Final answer
    x = 228,822,738.25

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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.