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Finding the Fourth Proportional to 205,504,706.60, 308,257,059.90 and 84,423,055.40

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Solution

The fourth proportional to 205,504,706.60, 308,257,059.90 and 84,423,055.40 is: 126,634,583.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,504,706.60 : 308,257,059.90 = 84,423,055.40 : x
  2. Step 2: Convert to fraction form
    205,504,706.60/308,257,059.90 = 84,423,055.40/x
  3. Step 3: Cross multiply
    205,504,706.60x = 308,257,059.90 × 84,423,055.40
  4. Step 4: Simplify right side
    205,504,706.60x = 26,024,002,845,378,820
  5. Step 5: Solve for x
    x = 26,024,002,845,378,820/205,504,706.60
  6. Step 6: Final answer
    x = 126,634,583.10

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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.