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Finding the Fourth Proportional to 323,411,627.80, 485,117,441.70 and 177,788,920.60

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Solution

The fourth proportional to 323,411,627.80, 485,117,441.70 and 177,788,920.60 is: 266,683,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,411,627.80 : 485,117,441.70 = 177,788,920.60 : x
  2. Step 2: Convert to fraction form
    323,411,627.80/485,117,441.70 = 177,788,920.60/x
  3. Step 3: Cross multiply
    323,411,627.80x = 485,117,441.70 × 177,788,920.60
  4. Step 4: Simplify right side
    323,411,627.80x = 86,248,506,324,076,432
  5. Step 5: Solve for x
    x = 86,248,506,324,076,432/323,411,627.80
  6. Step 6: Final answer
    x = 266,683,380.90

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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.