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Finding the Fourth Proportional to 251,523.40, 377,274.30 and 85,311.40

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Solution

The fourth proportional to 251,523.40, 377,274.30 and 85,311.40 is: 127,963.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,523.40 : 377,274.30 = 85,311.40 : x
  2. Step 2: Convert to fraction form
    251,523.40/377,274.30 = 85,311.40/x
  3. Step 3: Cross multiply
    251,523.40x = 377,274.30 × 85,311.40
  4. Step 4: Simplify right side
    251,523.40x = 32,185,798,717.02
  5. Step 5: Solve for x
    x = 32,185,798,717.02/251,523.40
  6. Step 6: Final answer
    x = 127,963.44

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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.