Home / 257,987.07-386,982.77-71,008.83

Finding the Fourth Proportional to 257,987.07, 386,982.77 and 71,008.83

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Solution

The fourth proportional to 257,987.07, 386,982.77 and 71,008.83 is: 106,513.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,987.07 : 386,982.77 = 71,008.83 : x
  2. Step 2: Convert to fraction form
    257,987.07/386,982.77 = 71,008.83/x
  3. Step 3: Cross multiply
    257,987.07x = 386,982.77 × 71,008.83
  4. Step 4: Simplify right side
    257,987.07x = 27,479,193,372.82
  5. Step 5: Solve for x
    x = 27,479,193,372.82/257,987.07
  6. Step 6: Final answer
    x = 106,513.84

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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.