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Finding the Fourth Proportional to 317,440.96, 438,067.22 and 174,203.40

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Solution

The fourth proportional to 317,440.96, 438,067.22 and 174,203.40 is: 240,399.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,440.96 : 438,067.22 = 174,203.40 : x
  2. Step 2: Convert to fraction form
    317,440.96/438,067.22 = 174,203.40/x
  3. Step 3: Cross multiply
    317,440.96x = 438,067.22 × 174,203.40
  4. Step 4: Simplify right side
    317,440.96x = 76,312,799,152.55
  5. Step 5: Solve for x
    x = 76,312,799,152.55/317,440.96
  6. Step 6: Final answer
    x = 240,399.98

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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.