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Finding the Fourth Proportional to 213,283.92, 319,679.79 and 80,079.21

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Solution

The fourth proportional to 213,283.92, 319,679.79 and 80,079.21 is: 120,026.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,283.92 : 319,679.79 = 80,079.21 : x
  2. Step 2: Convert to fraction form
    213,283.92/319,679.79 = 80,079.21/x
  3. Step 3: Cross multiply
    213,283.92x = 319,679.79 × 80,079.21
  4. Step 4: Simplify right side
    213,283.92x = 25,599,705,036.17
  5. Step 5: Solve for x
    x = 25,599,705,036.17/213,283.92
  6. Step 6: Final answer
    x = 120,026.42

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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.