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Finding the Fourth Proportional to 363,792,947.40, 545,694,086.70 and 121,455,851.40

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Solution

The fourth proportional to 363,792,947.40, 545,694,086.70 and 121,455,851.40 is: 182,185,334.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,792,947.40 : 545,694,086.70 = 121,455,851.40 : x
  2. Step 2: Convert to fraction form
    363,792,947.40/545,694,086.70 = 121,455,851.40/x
  3. Step 3: Cross multiply
    363,792,947.40x = 545,694,086.70 × 121,455,851.40
  4. Step 4: Simplify right side
    363,792,947.40x = 66,277,739,904,093,928
  5. Step 5: Solve for x
    x = 66,277,739,904,093,928/363,792,947.40
  6. Step 6: Final answer
    x = 182,185,334.76

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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.