Home / 280,409,799.37-420,238,722.99-218,236,189.24

Finding the Fourth Proportional to 280,409,799.37, 420,238,722.99 and 218,236,189.24

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Solution

The fourth proportional to 280,409,799.37, 420,238,722.99 and 218,236,189.24 is: 327,061,670.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,409,799.37 : 420,238,722.99 = 218,236,189.24 : x
  2. Step 2: Convert to fraction form
    280,409,799.37/420,238,722.99 = 218,236,189.24/x
  3. Step 3: Cross multiply
    280,409,799.37x = 420,238,722.99 × 218,236,189.24
  4. Step 4: Simplify right side
    280,409,799.37x = 91,711,297,476,421,584
  5. Step 5: Solve for x
    x = 91,711,297,476,421,584/280,409,799.37
  6. Step 6: Final answer
    x = 327,061,670.75

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1.5x scale

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.