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Finding the Fourth Proportional to 290,773,834.40, 435,790,268.40 and 154,524,490.40

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Solution

The fourth proportional to 290,773,834.40, 435,790,268.40 and 154,524,490.40 is: 231,589,851.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,773,834.40 : 435,790,268.40 = 154,524,490.40 : x
  2. Step 2: Convert to fraction form
    290,773,834.40/435,790,268.40 = 154,524,490.40/x
  3. Step 3: Cross multiply
    290,773,834.40x = 435,790,268.40 × 154,524,490.40
  4. Step 4: Simplify right side
    290,773,834.40x = 67,340,269,145,789,224
  5. Step 5: Solve for x
    x = 67,340,269,145,789,224/290,773,834.40
  6. Step 6: Final answer
    x = 231,589,851.56

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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.