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Finding the Fourth Proportional to 303,818.70, 455,071.95 and 251,330.70

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Solution

The fourth proportional to 303,818.70, 455,071.95 and 251,330.70 is: 376,453.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,818.70 : 455,071.95 = 251,330.70 : x
  2. Step 2: Convert to fraction form
    303,818.70/455,071.95 = 251,330.70/x
  3. Step 3: Cross multiply
    303,818.70x = 455,071.95 × 251,330.70
  4. Step 4: Simplify right side
    303,818.70x = 114,373,551,743.87
  5. Step 5: Solve for x
    x = 114,373,551,743.87/303,818.70
  6. Step 6: Final answer
    x = 376,453.30

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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.