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Finding the Fourth Proportional to 317,611.08, 438,304.05 and 174,380.36

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Solution

The fourth proportional to 317,611.08, 438,304.05 and 174,380.36 is: 240,645.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,611.08 : 438,304.05 = 174,380.36 : x
  2. Step 2: Convert to fraction form
    317,611.08/438,304.05 = 174,380.36/x
  3. Step 3: Cross multiply
    317,611.08x = 438,304.05 × 174,380.36
  4. Step 4: Simplify right side
    317,611.08x = 76,431,615,836.94
  5. Step 5: Solve for x
    x = 76,431,615,836.94/317,611.08
  6. Step 6: Final answer
    x = 240,645.31

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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.