Home / 247,942,678.18-371,913,961.88-90,387,504.51

Finding the Fourth Proportional to 247,942,678.18, 371,913,961.88 and 90,387,504.51

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Solution

The fourth proportional to 247,942,678.18, 371,913,961.88 and 90,387,504.51 is: 135,581,236.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,942,678.18 : 371,913,961.88 = 90,387,504.51 : x
  2. Step 2: Convert to fraction form
    247,942,678.18/371,913,961.88 = 90,387,504.51/x
  3. Step 3: Cross multiply
    247,942,678.18x = 371,913,961.88 × 90,387,504.51
  4. Step 4: Simplify right side
    247,942,678.18x = 33,616,374,906,760,468
  5. Step 5: Solve for x
    x = 33,616,374,906,760,468/247,942,678.18
  6. Step 6: Final answer
    x = 135,581,236.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.