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Finding the Fourth Proportional to 330,049.53, 455,082.58 and 306,134.69

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Solution

The fourth proportional to 330,049.53, 455,082.58 and 306,134.69 is: 422,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,049.53 : 455,082.58 = 306,134.69 : x
  2. Step 2: Convert to fraction form
    330,049.53/455,082.58 = 306,134.69/x
  3. Step 3: Cross multiply
    330,049.53x = 455,082.58 × 306,134.69
  4. Step 4: Simplify right side
    330,049.53x = 139,316,561,511.95
  5. Step 5: Solve for x
    x = 139,316,561,511.95/330,049.53
  6. Step 6: Final answer
    x = 422,108.04

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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.