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Finding the Fourth Proportional to 259,730.20, 389,595.30 and 171,035.20

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Solution

The fourth proportional to 259,730.20, 389,595.30 and 171,035.20 is: 256,552.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,730.20 : 389,595.30 = 171,035.20 : x
  2. Step 2: Convert to fraction form
    259,730.20/389,595.30 = 171,035.20/x
  3. Step 3: Cross multiply
    259,730.20x = 389,595.30 × 171,035.20
  4. Step 4: Simplify right side
    259,730.20x = 66,634,510,054.56
  5. Step 5: Solve for x
    x = 66,634,510,054.56/259,730.20
  6. Step 6: Final answer
    x = 256,552.80

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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.