Home / 392,509,876.32-541,667,211.48-216,304,193.91

Finding the Fourth Proportional to 392,509,876.32, 541,667,211.48 and 216,304,193.91

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Solution

The fourth proportional to 392,509,876.32, 541,667,211.48 and 216,304,193.91 is: 298,501,761.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,509,876.32 : 541,667,211.48 = 216,304,193.91 : x
  2. Step 2: Convert to fraction form
    392,509,876.32/541,667,211.48 = 216,304,193.91/x
  3. Step 3: Cross multiply
    392,509,876.32x = 541,667,211.48 × 216,304,193.91
  4. Step 4: Simplify right side
    392,509,876.32x = 117,164,889,546,658,896
  5. Step 5: Solve for x
    x = 117,164,889,546,658,896/392,509,876.32
  6. Step 6: Final answer
    x = 298,501,761.65

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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.