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Finding the Fourth Proportional to 259,663.20, 389,494.80 and 171,016.80

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Solution

The fourth proportional to 259,663.20, 389,494.80 and 171,016.80 is: 256,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,663.20 : 389,494.80 = 171,016.80 : x
  2. Step 2: Convert to fraction form
    259,663.20/389,494.80 = 171,016.80/x
  3. Step 3: Cross multiply
    259,663.20x = 389,494.80 × 171,016.80
  4. Step 4: Simplify right side
    259,663.20x = 66,610,154,312.64
  5. Step 5: Solve for x
    x = 66,610,154,312.64/259,663.20
  6. Step 6: Final answer
    x = 256,525.20

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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.