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Finding the Fourth Proportional to 251,138.40, 376,707.60 and 84,926.40

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Solution

The fourth proportional to 251,138.40, 376,707.60 and 84,926.40 is: 127,389.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,138.40 : 376,707.60 = 84,926.40 : x
  2. Step 2: Convert to fraction form
    251,138.40/376,707.60 = 84,926.40/x
  3. Step 3: Cross multiply
    251,138.40x = 376,707.60 × 84,926.40
  4. Step 4: Simplify right side
    251,138.40x = 31,992,420,320.64
  5. Step 5: Solve for x
    x = 31,992,420,320.64/251,138.40
  6. Step 6: Final answer
    x = 127,389.60

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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.