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Finding the Fourth Proportional to 319,992.48, 479,982.24 and 83,329.92

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Solution

The fourth proportional to 319,992.48, 479,982.24 and 83,329.92 is: 124,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,992.48 : 479,982.24 = 83,329.92 : x
  2. Step 2: Convert to fraction form
    319,992.48/479,982.24 = 83,329.92/x
  3. Step 3: Cross multiply
    319,992.48x = 479,982.24 × 83,329.92
  4. Step 4: Simplify right side
    319,992.48x = 39,996,881,660.62
  5. Step 5: Solve for x
    x = 39,996,881,660.62/319,992.48
  6. Step 6: Final answer
    x = 124,993.19

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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.