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Finding the Fourth Proportional to 299,692.56, 449,568.95 and 86,465.73

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Solution

The fourth proportional to 299,692.56, 449,568.95 and 86,465.73 is: 129,707.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,692.56 : 449,568.95 = 86,465.73 : x
  2. Step 2: Convert to fraction form
    299,692.56/449,568.95 = 86,465.73/x
  3. Step 3: Cross multiply
    299,692.56x = 449,568.95 × 86,465.73
  4. Step 4: Simplify right side
    299,692.56x = 38,872,307,014.75
  5. Step 5: Solve for x
    x = 38,872,307,014.75/299,692.56
  6. Step 6: Final answer
    x = 129,707.28

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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.