Home / 280,410,869.99-420,240,321.66-218,237,255.30

Finding the Fourth Proportional to 280,410,869.99, 420,240,321.66 and 218,237,255.30

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Solution

The fourth proportional to 280,410,869.99, 420,240,321.66 and 218,237,255.30 is: 327,063,263.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,410,869.99 : 420,240,321.66 = 218,237,255.30 : x
  2. Step 2: Convert to fraction form
    280,410,869.99/420,240,321.66 = 218,237,255.30/x
  3. Step 3: Cross multiply
    280,410,869.99x = 420,240,321.66 × 218,237,255.30
  4. Step 4: Simplify right side
    280,410,869.99x = 91,712,094,365,467,552
  5. Step 5: Solve for x
    x = 91,712,094,365,467,552/280,410,869.99
  6. Step 6: Final answer
    x = 327,063,263.88

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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.