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Finding the Fourth Proportional to 320,612.80, 442,452.72 and 177,383.02

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Solution

The fourth proportional to 320,612.80, 442,452.72 and 177,383.02 is: 244,792.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,612.80 : 442,452.72 = 177,383.02 : x
  2. Step 2: Convert to fraction form
    320,612.80/442,452.72 = 177,383.02/x
  3. Step 3: Cross multiply
    320,612.80x = 442,452.72 × 177,383.02
  4. Step 4: Simplify right side
    320,612.80x = 78,483,599,680.81
  5. Step 5: Solve for x
    x = 78,483,599,680.81/320,612.80
  6. Step 6: Final answer
    x = 244,792.47

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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.