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Finding the Fourth Proportional to 399,965,792.12, 599,888,069.78 and 108,855,599.94

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Solution

The fourth proportional to 399,965,792.12, 599,888,069.78 and 108,855,599.94 is: 163,266,901.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,965,792.12 : 599,888,069.78 = 108,855,599.94 : x
  2. Step 2: Convert to fraction form
    399,965,792.12/599,888,069.78 = 108,855,599.94/x
  3. Step 3: Cross multiply
    399,965,792.12x = 599,888,069.78 × 108,855,599.94
  4. Step 4: Simplify right side
    399,965,792.12x = 65,301,175,732,750,480
  5. Step 5: Solve for x
    x = 65,301,175,732,750,480/399,965,792.12
  6. Step 6: Final answer
    x = 163,266,901.87

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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.