Home / 392,509,830.36-541,667,148.21-216,304,147.97

Finding the Fourth Proportional to 392,509,830.36, 541,667,148.21 and 216,304,147.97

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Solution

The fourth proportional to 392,509,830.36, 541,667,148.21 and 216,304,147.97 is: 298,501,698.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,509,830.36 : 541,667,148.21 = 216,304,147.97 : x
  2. Step 2: Convert to fraction form
    392,509,830.36/541,667,148.21 = 216,304,147.97/x
  3. Step 3: Cross multiply
    392,509,830.36x = 541,667,148.21 × 216,304,147.97
  4. Step 4: Simplify right side
    392,509,830.36x = 117,164,850,976,903,776
  5. Step 5: Solve for x
    x = 117,164,850,976,903,776/392,509,830.36
  6. Step 6: Final answer
    x = 298,501,698.34

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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.