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Finding the Fourth Proportional to 252,648,019.20, 378,972,028.80 and 222,993,611.40

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Solution

The fourth proportional to 252,648,019.20, 378,972,028.80 and 222,993,611.40 is: 334,490,417.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,648,019.20 : 378,972,028.80 = 222,993,611.40 : x
  2. Step 2: Convert to fraction form
    252,648,019.20/378,972,028.80 = 222,993,611.40/x
  3. Step 3: Cross multiply
    252,648,019.20x = 378,972,028.80 × 222,993,611.40
  4. Step 4: Simplify right side
    252,648,019.20x = 84,508,341,321,696,816
  5. Step 5: Solve for x
    x = 84,508,341,321,696,816/252,648,019.20
  6. Step 6: Final answer
    x = 334,490,417.10

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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.