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Finding the Fourth Proportional to 319,496.40, 479,244.60 and 317,422.80

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Solution

The fourth proportional to 319,496.40, 479,244.60 and 317,422.80 is: 476,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,496.40 : 479,244.60 = 317,422.80 : x
  2. Step 2: Convert to fraction form
    319,496.40/479,244.60 = 317,422.80/x
  3. Step 3: Cross multiply
    319,496.40x = 479,244.60 × 317,422.80
  4. Step 4: Simplify right side
    319,496.40x = 152,123,162,816.88
  5. Step 5: Solve for x
    x = 152,123,162,816.88/319,496.40
  6. Step 6: Final answer
    x = 476,134.20

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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.