Home / 262,008,051.20-393,012,076.80-257,976,972.80

Finding the Fourth Proportional to 262,008,051.20, 393,012,076.80 and 257,976,972.80

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Solution

The fourth proportional to 262,008,051.20, 393,012,076.80 and 257,976,972.80 is: 386,965,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,008,051.20 : 393,012,076.80 = 257,976,972.80 : x
  2. Step 2: Convert to fraction form
    262,008,051.20/393,012,076.80 = 257,976,972.80/x
  3. Step 3: Cross multiply
    262,008,051.20x = 393,012,076.80 × 257,976,972.80
  4. Step 4: Simplify right side
    262,008,051.20x = 101,388,065,846,705,120
  5. Step 5: Solve for x
    x = 101,388,065,846,705,120/262,008,051.20
  6. Step 6: Final answer
    x = 386,965,459.20

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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.