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Finding the Fourth Proportional to 269,920.40, 404,890.20 and 82,931.60

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Solution

The fourth proportional to 269,920.40, 404,890.20 and 82,931.60 is: 124,400.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,920.40 : 404,890.20 = 82,931.60 : x
  2. Step 2: Convert to fraction form
    269,920.40/404,890.20 = 82,931.60/x
  3. Step 3: Cross multiply
    269,920.40x = 404,890.20 × 82,931.60
  4. Step 4: Simplify right side
    269,920.40x = 33,578,192,110.32
  5. Step 5: Solve for x
    x = 33,578,192,110.32/269,920.40
  6. Step 6: Final answer
    x = 124,400.35

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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.