Home / 392,472,857.59-541,588,139.80-216,250,991.39

Finding the Fourth Proportional to 392,472,857.59, 541,588,139.80 and 216,250,991.39

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Solution

The fourth proportional to 392,472,857.59, 541,588,139.80 and 216,250,991.39 is: 298,412,921.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,472,857.59 : 541,588,139.80 = 216,250,991.39 : x
  2. Step 2: Convert to fraction form
    392,472,857.59/541,588,139.80 = 216,250,991.39/x
  3. Step 3: Cross multiply
    392,472,857.59x = 541,588,139.80 × 216,250,991.39
  4. Step 4: Simplify right side
    392,472,857.59x = 117,118,972,156,815,904
  5. Step 5: Solve for x
    x = 117,118,972,156,815,904/392,472,857.59
  6. Step 6: Final answer
    x = 298,412,921.79

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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.