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Finding the Fourth Proportional to 300,719,807.20, 451,079,710.80 and 264,887,999.20

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Solution

The fourth proportional to 300,719,807.20, 451,079,710.80 and 264,887,999.20 is: 397,331,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,719,807.20 : 451,079,710.80 = 264,887,999.20 : x
  2. Step 2: Convert to fraction form
    300,719,807.20/451,079,710.80 = 264,887,999.20/x
  3. Step 3: Cross multiply
    300,719,807.20x = 451,079,710.80 × 264,887,999.20
  4. Step 4: Simplify right side
    300,719,807.20x = 119,485,602,073,526,624
  5. Step 5: Solve for x
    x = 119,485,602,073,526,624/300,719,807.20
  6. Step 6: Final answer
    x = 397,331,998.80

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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.