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Finding the Fourth Proportional to 317,812.92, 438,644.36 and 180,016.48

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Solution

The fourth proportional to 317,812.92, 438,644.36 and 180,016.48 is: 248,458.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,812.92 : 438,644.36 = 180,016.48 : x
  2. Step 2: Convert to fraction form
    317,812.92/438,644.36 = 180,016.48/x
  3. Step 3: Cross multiply
    317,812.92x = 438,644.36 × 180,016.48
  4. Step 4: Simplify right side
    317,812.92x = 78,963,213,659.05
  5. Step 5: Solve for x
    x = 78,963,213,659.05/317,812.92
  6. Step 6: Final answer
    x = 248,458.16

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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.