Home / 392,690,812.11-541,914,961.50-216,474,941.13

Finding the Fourth Proportional to 392,690,812.11, 541,914,961.50 and 216,474,941.13

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Solution

The fourth proportional to 392,690,812.11, 541,914,961.50 and 216,474,941.13 is: 298,736,323.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,690,812.11 : 541,914,961.50 = 216,474,941.13 : x
  2. Step 2: Convert to fraction form
    392,690,812.11/541,914,961.50 = 216,474,941.13/x
  3. Step 3: Cross multiply
    392,690,812.11x = 541,914,961.50 × 216,474,941.13
  4. Step 4: Simplify right side
    392,690,812.11x = 117,311,009,388,178,720
  5. Step 5: Solve for x
    x = 117,311,009,388,178,720/392,690,812.11
  6. Step 6: Final answer
    x = 298,736,323.26

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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.