Home / 280,229,296.33-420,384,061.37-86,157,008.56

Finding the Fourth Proportional to 280,229,296.33, 420,384,061.37 and 86,157,008.56

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Solution

The fourth proportional to 280,229,296.33, 420,384,061.37 and 86,157,008.56 is: 129,247,846.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,229,296.33 : 420,384,061.37 = 86,157,008.56 : x
  2. Step 2: Convert to fraction form
    280,229,296.33/420,384,061.37 = 86,157,008.56/x
  3. Step 3: Cross multiply
    280,229,296.33x = 420,384,061.37 × 86,157,008.56
  4. Step 4: Simplify right side
    280,229,296.33x = 36,219,033,173,942,656
  5. Step 5: Solve for x
    x = 36,219,033,173,942,656/280,229,296.33
  6. Step 6: Final answer
    x = 129,247,846.85

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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.