Home / 259,968.30-389,952.45-120,000.30

Finding the Fourth Proportional to 259,968.30, 389,952.45 and 120,000.30

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Solution

The fourth proportional to 259,968.30, 389,952.45 and 120,000.30 is: 180,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,968.30 : 389,952.45 = 120,000.30 : x
  2. Step 2: Convert to fraction form
    259,968.30/389,952.45 = 120,000.30/x
  3. Step 3: Cross multiply
    259,968.30x = 389,952.45 × 120,000.30
  4. Step 4: Simplify right side
    259,968.30x = 46,794,410,985.74
  5. Step 5: Solve for x
    x = 46,794,410,985.74/259,968.30
  6. Step 6: Final answer
    x = 180,000.45

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Similar ratio
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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.