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Finding the Fourth Proportional to 272,879,077.80, 409,318,616.70 and 78,796,824.60

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Solution

The fourth proportional to 272,879,077.80, 409,318,616.70 and 78,796,824.60 is: 118,195,236.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,879,077.80 : 409,318,616.70 = 78,796,824.60 : x
  2. Step 2: Convert to fraction form
    272,879,077.80/409,318,616.70 = 78,796,824.60/x
  3. Step 3: Cross multiply
    272,879,077.80x = 409,318,616.70 × 78,796,824.60
  4. Step 4: Simplify right side
    272,879,077.80x = 32,253,007,245,624,528
  5. Step 5: Solve for x
    x = 32,253,007,245,624,528/272,879,077.80
  6. Step 6: Final answer
    x = 118,195,236.90

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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.