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Finding the Fourth Proportional to 354,642,049.80, 531,963,074.70 and 298,521,880.20

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Solution

The fourth proportional to 354,642,049.80, 531,963,074.70 and 298,521,880.20 is: 447,782,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,642,049.80 : 531,963,074.70 = 298,521,880.20 : x
  2. Step 2: Convert to fraction form
    354,642,049.80/531,963,074.70 = 298,521,880.20/x
  3. Step 3: Cross multiply
    354,642,049.80x = 531,963,074.70 × 298,521,880.20
  4. Step 4: Simplify right side
    354,642,049.80x = 158,802,617,256,417,056
  5. Step 5: Solve for x
    x = 158,802,617,256,417,056/354,642,049.80
  6. Step 6: Final answer
    x = 447,782,820.30

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