Home / 392,690,813.11-541,914,962.88-216,474,942.13

Finding the Fourth Proportional to 392,690,813.11, 541,914,962.88 and 216,474,942.13

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Solution

The fourth proportional to 392,690,813.11, 541,914,962.88 and 216,474,942.13 is: 298,736,324.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,690,813.11 : 541,914,962.88 = 216,474,942.13 : x
  2. Step 2: Convert to fraction form
    392,690,813.11/541,914,962.88 = 216,474,942.13/x
  3. Step 3: Cross multiply
    392,690,813.11x = 541,914,962.88 × 216,474,942.13
  4. Step 4: Simplify right side
    392,690,813.11x = 117,311,010,228,829,088
  5. Step 5: Solve for x
    x = 117,311,010,228,829,088/392,690,813.11
  6. Step 6: Final answer
    x = 298,736,324.64

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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.