Home / 319,539.12-479,189.06-137,146.90

Finding the Fourth Proportional to 319,539.12, 479,189.06 and 137,146.90

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Solution

The fourth proportional to 319,539.12, 479,189.06 and 137,146.90 is: 205,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,539.12 : 479,189.06 = 137,146.90 : x
  2. Step 2: Convert to fraction form
    319,539.12/479,189.06 = 137,146.90/x
  3. Step 3: Cross multiply
    319,539.12x = 479,189.06 × 137,146.90
  4. Step 4: Simplify right side
    319,539.12x = 65,719,294,092.91
  5. Step 5: Solve for x
    x = 65,719,294,092.91/319,539.12
  6. Step 6: Final answer
    x = 205,669.01

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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.