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Finding the Fourth Proportional to 317,744.43, 438,485.55 and 172,548.82

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Solution

The fourth proportional to 317,744.43, 438,485.55 and 172,548.82 is: 238,116.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,744.43 : 438,485.55 = 172,548.82 : x
  2. Step 2: Convert to fraction form
    317,744.43/438,485.55 = 172,548.82/x
  3. Step 3: Cross multiply
    317,744.43x = 438,485.55 × 172,548.82
  4. Step 4: Simplify right side
    317,744.43x = 75,660,164,747.22
  5. Step 5: Solve for x
    x = 75,660,164,747.22/317,744.43
  6. Step 6: Final answer
    x = 238,116.41

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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.