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Finding the Fourth Proportional to 317,670.72, 438,390.72 and 174,444

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Solution

The fourth proportional to 317,670.72, 438,390.72 and 174,444 is: 240,735.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,670.72 : 438,390.72 = 174,444 : x
  2. Step 2: Convert to fraction form
    317,670.72/438,390.72 = 174,444/x
  3. Step 3: Cross multiply
    317,670.72x = 438,390.72 × 174,444
  4. Step 4: Simplify right side
    317,670.72x = 76,474,630,759.68
  5. Step 5: Solve for x
    x = 76,474,630,759.68/317,670.72
  6. Step 6: Final answer
    x = 240,735.54

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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.