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Finding the Fourth Proportional to 323,411,361.80, 485,117,042.70 and 177,788,654.60

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Solution

The fourth proportional to 323,411,361.80, 485,117,042.70 and 177,788,654.60 is: 266,682,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,411,361.80 : 485,117,042.70 = 177,788,654.60 : x
  2. Step 2: Convert to fraction form
    323,411,361.80/485,117,042.70 = 177,788,654.60/x
  3. Step 3: Cross multiply
    323,411,361.80x = 485,117,042.70 × 177,788,654.60
  4. Step 4: Simplify right side
    323,411,361.80x = 86,248,306,345,163,744
  5. Step 5: Solve for x
    x = 86,248,306,345,163,744/323,411,361.80
  6. Step 6: Final answer
    x = 266,682,981.90

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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.