Home / 257,793.10-386,539.78-172,501.42

Finding the Fourth Proportional to 257,793.10, 386,539.78 and 172,501.42

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Solution

The fourth proportional to 257,793.10, 386,539.78 and 172,501.42 is: 258,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,793.10 : 386,539.78 = 172,501.42 : x
  2. Step 2: Convert to fraction form
    257,793.10/386,539.78 = 172,501.42/x
  3. Step 3: Cross multiply
    257,793.10x = 386,539.78 × 172,501.42
  4. Step 4: Simplify right side
    257,793.10x = 66,678,660,936.49
  5. Step 5: Solve for x
    x = 66,678,660,936.49/257,793.10
  6. Step 6: Final answer
    x = 258,651.84

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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.