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Finding the Fourth Proportional to 317,486.64, 438,136.90 and 174,260

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Solution

The fourth proportional to 317,486.64, 438,136.90 and 174,260 is: 240,481.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,486.64 : 438,136.90 = 174,260 : x
  2. Step 2: Convert to fraction form
    317,486.64/438,136.90 = 174,260/x
  3. Step 3: Cross multiply
    317,486.64x = 438,136.90 × 174,260
  4. Step 4: Simplify right side
    317,486.64x = 76,349,736,194
  5. Step 5: Solve for x
    x = 76,349,736,194/317,486.64
  6. Step 6: Final answer
    x = 240,481.73

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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.