Home / 305,246.20-420,754.27-240,610.63

Finding the Fourth Proportional to 305,246.20, 420,754.27 and 240,610.63

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Solution

The fourth proportional to 305,246.20, 420,754.27 and 240,610.63 is: 331,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,246.20 : 420,754.27 = 240,610.63 : x
  2. Step 2: Convert to fraction form
    305,246.20/420,754.27 = 240,610.63/x
  3. Step 3: Cross multiply
    305,246.20x = 420,754.27 × 240,610.63
  4. Step 4: Simplify right side
    305,246.20x = 101,237,949,979.89
  5. Step 5: Solve for x
    x = 101,237,949,979.89/305,246.20
  6. Step 6: Final answer
    x = 331,659.98

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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.