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Finding the Fourth Proportional to 251,208.80, 376,813.20 and 223,215.20

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Solution

The fourth proportional to 251,208.80, 376,813.20 and 223,215.20 is: 334,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,208.80 : 376,813.20 = 223,215.20 : x
  2. Step 2: Convert to fraction form
    251,208.80/376,813.20 = 223,215.20/x
  3. Step 3: Cross multiply
    251,208.80x = 376,813.20 × 223,215.20
  4. Step 4: Simplify right side
    251,208.80x = 84,110,433,800.64
  5. Step 5: Solve for x
    x = 84,110,433,800.64/251,208.80
  6. Step 6: Final answer
    x = 334,822.80

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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.