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Finding the Fourth Proportional to 251,143.40, 376,763.70 and 73,656.20

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Solution

The fourth proportional to 251,143.40, 376,763.70 and 73,656.20 is: 110,498.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,143.40 : 376,763.70 = 73,656.20 : x
  2. Step 2: Convert to fraction form
    251,143.40/376,763.70 = 73,656.20/x
  3. Step 3: Cross multiply
    251,143.40x = 376,763.70 × 73,656.20
  4. Step 4: Simplify right side
    251,143.40x = 27,750,982,439.94
  5. Step 5: Solve for x
    x = 27,750,982,439.94/251,143.40
  6. Step 6: Final answer
    x = 110,498.55

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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.