Home / 259,728.40-389,592.60-165,725.20

Finding the Fourth Proportional to 259,728.40, 389,592.60 and 165,725.20

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Solution

The fourth proportional to 259,728.40, 389,592.60 and 165,725.20 is: 248,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,728.40 : 389,592.60 = 165,725.20 : x
  2. Step 2: Convert to fraction form
    259,728.40/389,592.60 = 165,725.20/x
  3. Step 3: Cross multiply
    259,728.40x = 389,592.60 × 165,725.20
  4. Step 4: Simplify right side
    259,728.40x = 64,565,311,553.52
  5. Step 5: Solve for x
    x = 64,565,311,553.52/259,728.40
  6. Step 6: Final answer
    x = 248,587.80

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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.