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Finding the Fourth Proportional to 317,728.93, 438,636.15 and 244,972.90

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Solution

The fourth proportional to 317,728.93, 438,636.15 and 244,972.90 is: 338,193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,728.93 : 438,636.15 = 244,972.90 : x
  2. Step 2: Convert to fraction form
    317,728.93/438,636.15 = 244,972.90/x
  3. Step 3: Cross multiply
    317,728.93x = 438,636.15 × 244,972.90
  4. Step 4: Simplify right side
    317,728.93x = 107,453,969,710.34
  5. Step 5: Solve for x
    x = 107,453,969,710.34/317,728.93
  6. Step 6: Final answer
    x = 338,193.85

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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.