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Finding the Fourth Proportional to 306,762.28, 423,327.92 and 177,718.34

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Solution

The fourth proportional to 306,762.28, 423,327.92 and 177,718.34 is: 245,248.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,762.28 : 423,327.92 = 177,718.34 : x
  2. Step 2: Convert to fraction form
    306,762.28/423,327.92 = 177,718.34/x
  3. Step 3: Cross multiply
    306,762.28x = 423,327.92 × 177,718.34
  4. Step 4: Simplify right side
    306,762.28x = 75,233,135,218.05
  5. Step 5: Solve for x
    x = 75,233,135,218.05/306,762.28
  6. Step 6: Final answer
    x = 245,248.98

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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.