Home / 399,016.20-550,655.62-217,738.08

Finding the Fourth Proportional to 399,016.20, 550,655.62 and 217,738.08

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Solution

The fourth proportional to 399,016.20, 550,655.62 and 217,738.08 is: 300,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,016.20 : 550,655.62 = 217,738.08 : x
  2. Step 2: Convert to fraction form
    399,016.20/550,655.62 = 217,738.08/x
  3. Step 3: Cross multiply
    399,016.20x = 550,655.62 × 217,738.08
  4. Step 4: Simplify right side
    399,016.20x = 119,898,697,440.01
  5. Step 5: Solve for x
    x = 119,898,697,440.01/399,016.20
  6. Step 6: Final answer
    x = 300,485.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.