Home / 262,289,999.80-393,434,999.70-80,513,558.20

Finding the Fourth Proportional to 262,289,999.80, 393,434,999.70 and 80,513,558.20

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Solution

The fourth proportional to 262,289,999.80, 393,434,999.70 and 80,513,558.20 is: 120,770,337.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,289,999.80 : 393,434,999.70 = 80,513,558.20 : x
  2. Step 2: Convert to fraction form
    262,289,999.80/393,434,999.70 = 80,513,558.20/x
  3. Step 3: Cross multiply
    262,289,999.80x = 393,434,999.70 × 80,513,558.20
  4. Step 4: Simplify right side
    262,289,999.80x = 31,676,851,746,262,932
  5. Step 5: Solve for x
    x = 31,676,851,746,262,932/262,289,999.80
  6. Step 6: Final answer
    x = 120,770,337.30

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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.