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Finding the Fourth Proportional to 317,388.39, 438,003.63 and 174,148.32

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Solution

The fourth proportional to 317,388.39, 438,003.63 and 174,148.32 is: 240,328.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,388.39 : 438,003.63 = 174,148.32 : x
  2. Step 2: Convert to fraction form
    317,388.39/438,003.63 = 174,148.32/x
  3. Step 3: Cross multiply
    317,388.39x = 438,003.63 × 174,148.32
  4. Step 4: Simplify right side
    317,388.39x = 76,277,595,447.66
  5. Step 5: Solve for x
    x = 76,277,595,447.66/317,388.39
  6. Step 6: Final answer
    x = 240,328.88

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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.