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Finding the Fourth Proportional to 317,466.78, 438,112.68 and 174,231.90

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Solution

The fourth proportional to 317,466.78, 438,112.68 and 174,231.90 is: 240,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,466.78 : 438,112.68 = 174,231.90 : x
  2. Step 2: Convert to fraction form
    317,466.78/438,112.68 = 174,231.90/x
  3. Step 3: Cross multiply
    317,466.78x = 438,112.68 × 174,231.90
  4. Step 4: Simplify right side
    317,466.78x = 76,333,204,650.49
  5. Step 5: Solve for x
    x = 76,333,204,650.49/317,466.78
  6. Step 6: Final answer
    x = 240,444.70

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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.