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Finding the Fourth Proportional to 319,992.12, 480,036.78 and 120,326.31

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Solution

The fourth proportional to 319,992.12, 480,036.78 and 120,326.31 is: 180,507.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,992.12 : 480,036.78 = 120,326.31 : x
  2. Step 2: Convert to fraction form
    319,992.12/480,036.78 = 120,326.31/x
  3. Step 3: Cross multiply
    319,992.12x = 480,036.78 × 120,326.31
  4. Step 4: Simplify right side
    319,992.12x = 57,761,054,401.68
  5. Step 5: Solve for x
    x = 57,761,054,401.68/319,992.12
  6. Step 6: Final answer
    x = 180,507.74

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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.