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Finding the Fourth Proportional to 330,063.21, 495,070.21 and 105,447.38

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Solution

The fourth proportional to 330,063.21, 495,070.21 and 105,447.38 is: 158,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,063.21 : 495,070.21 = 105,447.38 : x
  2. Step 2: Convert to fraction form
    330,063.21/495,070.21 = 105,447.38/x
  3. Step 3: Cross multiply
    330,063.21x = 495,070.21 × 105,447.38
  4. Step 4: Simplify right side
    330,063.21x = 52,203,854,217.01
  5. Step 5: Solve for x
    x = 52,203,854,217.01/330,063.21
  6. Step 6: Final answer
    x = 158,163.20

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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.