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Finding the Fourth Proportional to 317,601.20, 476,401.80 and 139,919.60

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Solution

The fourth proportional to 317,601.20, 476,401.80 and 139,919.60 is: 209,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,601.20 : 476,401.80 = 139,919.60 : x
  2. Step 2: Convert to fraction form
    317,601.20/476,401.80 = 139,919.60/x
  3. Step 3: Cross multiply
    317,601.20x = 476,401.80 × 139,919.60
  4. Step 4: Simplify right side
    317,601.20x = 66,657,949,295.28
  5. Step 5: Solve for x
    x = 66,657,949,295.28/317,601.20
  6. Step 6: Final answer
    x = 209,879.40

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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.