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Finding the Fourth Proportional to 317,630.94, 438,205.68 and 181,591.80

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Solution

The fourth proportional to 317,630.94, 438,205.68 and 181,591.80 is: 250,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,630.94 : 438,205.68 = 181,591.80 : x
  2. Step 2: Convert to fraction form
    317,630.94/438,205.68 = 181,591.80/x
  3. Step 3: Cross multiply
    317,630.94x = 438,205.68 × 181,591.80
  4. Step 4: Simplify right side
    317,630.94x = 79,574,555,102.44
  5. Step 5: Solve for x
    x = 79,574,555,102.44/317,630.94
  6. Step 6: Final answer
    x = 250,525.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.