Home / 280,409,796.86-420,238,719.24-218,236,186.74

Finding the Fourth Proportional to 280,409,796.86, 420,238,719.24 and 218,236,186.74

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Solution

The fourth proportional to 280,409,796.86, 420,238,719.24 and 218,236,186.74 is: 327,061,667.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,409,796.86 : 420,238,719.24 = 218,236,186.74 : x
  2. Step 2: Convert to fraction form
    280,409,796.86/420,238,719.24 = 218,236,186.74/x
  3. Step 3: Cross multiply
    280,409,796.86x = 420,238,719.24 × 218,236,186.74
  4. Step 4: Simplify right side
    280,409,796.86x = 91,711,295,606,924,288
  5. Step 5: Solve for x
    x = 91,711,295,606,924,288/280,409,796.86
  6. Step 6: Final answer
    x = 327,061,667.00

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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.