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Finding the Fourth Proportional to 248,728,885.79, 373,012,497.16 and 82,687,821.71

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Solution

The fourth proportional to 248,728,885.79, 373,012,497.16 and 82,687,821.71 is: 124,004,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,728,885.79 : 373,012,497.16 = 82,687,821.71 : x
  2. Step 2: Convert to fraction form
    248,728,885.79/373,012,497.16 = 82,687,821.71/x
  3. Step 3: Cross multiply
    248,728,885.79x = 373,012,497.16 × 82,687,821.71
  4. Step 4: Simplify right side
    248,728,885.79x = 30,843,590,858,696,180
  5. Step 5: Solve for x
    x = 30,843,590,858,696,180/248,728,885.79
  6. Step 6: Final answer
    x = 124,004,860.80

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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.