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Finding the Fourth Proportional to 289,690,092.52, 399,764,355.30 and 159,309,900.52

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Solution

The fourth proportional to 289,690,092.52, 399,764,355.30 and 159,309,900.52 is: 219,843,278.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,690,092.52 : 399,764,355.30 = 159,309,900.52 : x
  2. Step 2: Convert to fraction form
    289,690,092.52/399,764,355.30 = 159,309,900.52/x
  3. Step 3: Cross multiply
    289,690,092.52x = 399,764,355.30 × 159,309,900.52
  4. Step 4: Simplify right side
    289,690,092.52x = 63,686,419,674,284,944
  5. Step 5: Solve for x
    x = 63,686,419,674,284,944/289,690,092.52
  6. Step 6: Final answer
    x = 219,843,278.45

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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.