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Finding the Fourth Proportional to 330,123.90, 455,572.90 and 194,163.58

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Solution

The fourth proportional to 330,123.90, 455,572.90 and 194,163.58 is: 267,946.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,123.90 : 455,572.90 = 194,163.58 : x
  2. Step 2: Convert to fraction form
    330,123.90/455,572.90 = 194,163.58/x
  3. Step 3: Cross multiply
    330,123.90x = 455,572.90 × 194,163.58
  4. Step 4: Simplify right side
    330,123.90x = 88,455,665,214.98
  5. Step 5: Solve for x
    x = 88,455,665,214.98/330,123.90
  6. Step 6: Final answer
    x = 267,946.87

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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.