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Finding the Fourth Proportional to 279,785,080.80, 419,677,621.20 and 88,308,856.80

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Solution

The fourth proportional to 279,785,080.80, 419,677,621.20 and 88,308,856.80 is: 132,463,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,785,080.80 : 419,677,621.20 = 88,308,856.80 : x
  2. Step 2: Convert to fraction form
    279,785,080.80/419,677,621.20 = 88,308,856.80/x
  3. Step 3: Cross multiply
    279,785,080.80x = 419,677,621.20 × 88,308,856.80
  4. Step 4: Simplify right side
    279,785,080.80x = 37,061,250,952,715,440
  5. Step 5: Solve for x
    x = 37,061,250,952,715,440/279,785,080.80
  6. Step 6: Final answer
    x = 132,463,285.20

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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.