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Finding the Fourth Proportional to 330,437.46, 495,656.55 and 90,553.41

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Solution

The fourth proportional to 330,437.46, 495,656.55 and 90,553.41 is: 135,830.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,437.46 : 495,656.55 = 90,553.41 : x
  2. Step 2: Convert to fraction form
    330,437.46/495,656.55 = 90,553.41/x
  3. Step 3: Cross multiply
    330,437.46x = 495,656.55 × 90,553.41
  4. Step 4: Simplify right side
    330,437.46x = 44,883,390,791.34
  5. Step 5: Solve for x
    x = 44,883,390,791.34/330,437.46
  6. Step 6: Final answer
    x = 135,830.21

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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.