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Finding the Fourth Proportional to 329,615.40, 494,358.30 and 107,999.40

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Solution

The fourth proportional to 329,615.40, 494,358.30 and 107,999.40 is: 161,977.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,615.40 : 494,358.30 = 107,999.40 : x
  2. Step 2: Convert to fraction form
    329,615.40/494,358.30 = 107,999.40/x
  3. Step 3: Cross multiply
    329,615.40x = 494,358.30 × 107,999.40
  4. Step 4: Simplify right side
    329,615.40x = 53,390,399,785.02
  5. Step 5: Solve for x
    x = 53,390,399,785.02/329,615.40
  6. Step 6: Final answer
    x = 161,977.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.