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Finding the Fourth Proportional to 313,861.61, 433,127.22 and 177,921.20

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Solution

The fourth proportional to 313,861.61, 433,127.22 and 177,921.20 is: 245,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,861.61 : 433,127.22 = 177,921.20 : x
  2. Step 2: Convert to fraction form
    313,861.61/433,127.22 = 177,921.20/x
  3. Step 3: Cross multiply
    313,861.61x = 433,127.22 × 177,921.20
  4. Step 4: Simplify right side
    313,861.61x = 77,062,515,150.68
  5. Step 5: Solve for x
    x = 77,062,515,150.68/313,861.61
  6. Step 6: Final answer
    x = 245,530.23

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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.