Home / 305,042,711.58-420,959,213.24-165,813,473.35

Finding the Fourth Proportional to 305,042,711.58, 420,959,213.24 and 165,813,473.35

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Solution

The fourth proportional to 305,042,711.58, 420,959,213.24 and 165,813,473.35 is: 228,822,740.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,042,711.58 : 420,959,213.24 = 165,813,473.35 : x
  2. Step 2: Convert to fraction form
    305,042,711.58/420,959,213.24 = 165,813,473.35/x
  3. Step 3: Cross multiply
    305,042,711.58x = 420,959,213.24 × 165,813,473.35
  4. Step 4: Simplify right side
    305,042,711.58x = 69,800,709,286,007,704
  5. Step 5: Solve for x
    x = 69,800,709,286,007,704/305,042,711.58
  6. Step 6: Final answer
    x = 228,822,740.67

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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.