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Finding the Fourth Proportional to 273,103,651.80, 409,655,477.70 and 189,879,991.20

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Solution

The fourth proportional to 273,103,651.80, 409,655,477.70 and 189,879,991.20 is: 284,819,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,103,651.80 : 409,655,477.70 = 189,879,991.20 : x
  2. Step 2: Convert to fraction form
    273,103,651.80/409,655,477.70 = 189,879,991.20/x
  3. Step 3: Cross multiply
    273,103,651.80x = 409,655,477.70 × 189,879,991.20
  4. Step 4: Simplify right side
    273,103,651.80x = 77,785,378,500,707,792
  5. Step 5: Solve for x
    x = 77,785,378,500,707,792/273,103,651.80
  6. Step 6: Final answer
    x = 284,819,986.80

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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.