Home / 392,509,905.42-541,667,251.98-216,304,223.16

Finding the Fourth Proportional to 392,509,905.42, 541,667,251.98 and 216,304,223.16

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Solution

The fourth proportional to 392,509,905.42, 541,667,251.98 and 216,304,223.16 is: 298,501,802.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,509,905.42 : 541,667,251.98 = 216,304,223.16 : x
  2. Step 2: Convert to fraction form
    392,509,905.42/541,667,251.98 = 216,304,223.16/x
  3. Step 3: Cross multiply
    392,509,905.42x = 541,667,251.98 × 216,304,223.16
  4. Step 4: Simplify right side
    392,509,905.42x = 117,164,914,150,745,872
  5. Step 5: Solve for x
    x = 117,164,914,150,745,872/392,509,905.42
  6. Step 6: Final answer
    x = 298,501,802.20

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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.