Home / 279,952,387.20-419,718,628.80-143,735,529.60

Finding the Fourth Proportional to 279,952,387.20, 419,718,628.80 and 143,735,529.60

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Solution

The fourth proportional to 279,952,387.20, 419,718,628.80 and 143,735,529.60 is: 215,495,499.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,952,387.20 : 419,718,628.80 = 143,735,529.60 : x
  2. Step 2: Convert to fraction form
    279,952,387.20/419,718,628.80 = 143,735,529.60/x
  3. Step 3: Cross multiply
    279,952,387.20x = 419,718,628.80 × 143,735,529.60
  4. Step 4: Simplify right side
    279,952,387.20x = 60,328,479,393,553,808
  5. Step 5: Solve for x
    x = 60,328,479,393,553,808/279,952,387.20
  6. Step 6: Final answer
    x = 215,495,499.06

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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.