Home / 392,476,665.92-541,629,352.28-216,276,011.51

Finding the Fourth Proportional to 392,476,665.92, 541,629,352.28 and 216,276,011.51

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Solution

The fourth proportional to 392,476,665.92, 541,629,352.28 and 216,276,011.51 is: 298,467,262.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,476,665.92 : 541,629,352.28 = 216,276,011.51 : x
  2. Step 2: Convert to fraction form
    392,476,665.92/541,629,352.28 = 216,276,011.51/x
  3. Step 3: Cross multiply
    392,476,665.92x = 541,629,352.28 × 216,276,011.51
  4. Step 4: Simplify right side
    392,476,665.92x = 117,141,436,026,781,728
  5. Step 5: Solve for x
    x = 117,141,436,026,781,728/392,476,665.92
  6. Step 6: Final answer
    x = 298,467,262.38

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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.