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Finding the Fourth Proportional to 317,503.82, 438,154.70 and 181,540.32

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Solution

The fourth proportional to 317,503.82, 438,154.70 and 181,540.32 is: 250,525.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,503.82 : 438,154.70 = 181,540.32 : x
  2. Step 2: Convert to fraction form
    317,503.82/438,154.70 = 181,540.32/x
  3. Step 3: Cross multiply
    317,503.82x = 438,154.70 × 181,540.32
  4. Step 4: Simplify right side
    317,503.82x = 79,542,743,539.80
  5. Step 5: Solve for x
    x = 79,542,743,539.80/317,503.82
  6. Step 6: Final answer
    x = 250,525.32

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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.