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Finding the Fourth Proportional to 317,319.60, 475,979.40 and 303,322.80

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Solution

The fourth proportional to 317,319.60, 475,979.40 and 303,322.80 is: 454,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,319.60 : 475,979.40 = 303,322.80 : x
  2. Step 2: Convert to fraction form
    317,319.60/475,979.40 = 303,322.80/x
  3. Step 3: Cross multiply
    317,319.60x = 475,979.40 × 303,322.80
  4. Step 4: Simplify right side
    317,319.60x = 144,375,404,350.32
  5. Step 5: Solve for x
    x = 144,375,404,350.32/317,319.60
  6. Step 6: Final answer
    x = 454,984.20

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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.