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Finding the Fourth Proportional to 330,496.21, 495,655.75 and 143,463.25

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Solution

The fourth proportional to 330,496.21, 495,655.75 and 143,463.25 is: 215,156.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,496.21 : 495,655.75 = 143,463.25 : x
  2. Step 2: Convert to fraction form
    330,496.21/495,655.75 = 143,463.25/x
  3. Step 3: Cross multiply
    330,496.21x = 495,655.75 × 143,463.25
  4. Step 4: Simplify right side
    330,496.21x = 71,108,384,776.19
  5. Step 5: Solve for x
    x = 71,108,384,776.19/330,496.21
  6. Step 6: Final answer
    x = 215,156.43

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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.