Home / 305,042,712.58-420,959,214.62-165,813,474.35

Finding the Fourth Proportional to 305,042,712.58, 420,959,214.62 and 165,813,474.35

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Solution

The fourth proportional to 305,042,712.58, 420,959,214.62 and 165,813,474.35 is: 228,822,742.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,042,712.58 : 420,959,214.62 = 165,813,474.35 : x
  2. Step 2: Convert to fraction form
    305,042,712.58/420,959,214.62 = 165,813,474.35/x
  3. Step 3: Cross multiply
    305,042,712.58x = 420,959,214.62 × 165,813,474.35
  4. Step 4: Simplify right side
    305,042,712.58x = 69,800,709,935,789,512
  5. Step 5: Solve for x
    x = 69,800,709,935,789,512/305,042,712.58
  6. Step 6: Final answer
    x = 228,822,742.05

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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.