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Finding the Fourth Proportional to 320,689.24, 480,891.72 and 170,901.64

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Solution

The fourth proportional to 320,689.24, 480,891.72 and 170,901.64 is: 256,276.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,689.24 : 480,891.72 = 170,901.64 : x
  2. Step 2: Convert to fraction form
    320,689.24/480,891.72 = 170,901.64/x
  3. Step 3: Cross multiply
    320,689.24x = 480,891.72 × 170,901.64
  4. Step 4: Simplify right side
    320,689.24x = 82,185,183,610.42
  5. Step 5: Solve for x
    x = 82,185,183,610.42/320,689.24
  6. Step 6: Final answer
    x = 256,276.71

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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.