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Finding the Fourth Proportional to 317,440.80, 445,039.20 and 317,440.80

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Solution

The fourth proportional to 317,440.80, 445,039.20 and 317,440.80 is: 445,039.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,440.80 : 445,039.20 = 317,440.80 : x
  2. Step 2: Convert to fraction form
    317,440.80/445,039.20 = 317,440.80/x
  3. Step 3: Cross multiply
    317,440.80x = 445,039.20 × 317,440.80
  4. Step 4: Simplify right side
    317,440.80x = 141,273,599,679.36
  5. Step 5: Solve for x
    x = 141,273,599,679.36/317,440.80
  6. Step 6: Final answer
    x = 445,039.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.