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Finding the Fourth Proportional to 605,439.30, 908,158.95 and 251,145.30

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Solution

The fourth proportional to 605,439.30, 908,158.95 and 251,145.30 is: 376,717.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,439.30 : 908,158.95 = 251,145.30 : x
  2. Step 2: Convert to fraction form
    605,439.30/908,158.95 = 251,145.30/x
  3. Step 3: Cross multiply
    605,439.30x = 908,158.95 × 251,145.30
  4. Step 4: Simplify right side
    605,439.30x = 228,079,851,945.44
  5. Step 5: Solve for x
    x = 228,079,851,945.44/605,439.30
  6. Step 6: Final answer
    x = 376,717.95

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Double scale
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Similar ratio
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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.