Home / 319,979.39-479,996.64-83,322.50

Finding the Fourth Proportional to 319,979.39, 479,996.64 and 83,322.50

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Solution

The fourth proportional to 319,979.39, 479,996.64 and 83,322.50 is: 124,990.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,979.39 : 479,996.64 = 83,322.50 : x
  2. Step 2: Convert to fraction form
    319,979.39/479,996.64 = 83,322.50/x
  3. Step 3: Cross multiply
    319,979.39x = 479,996.64 × 83,322.50
  4. Step 4: Simplify right side
    319,979.39x = 39,994,517,636.42
  5. Step 5: Solve for x
    x = 39,994,517,636.42/319,979.39
  6. Step 6: Final answer
    x = 124,990.92

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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.