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Finding the Fourth Proportional to 220,311, 304,029.18 and 130,887

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Solution

The fourth proportional to 220,311, 304,029.18 and 130,887 is: 180,624.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,311 : 304,029.18 = 130,887 : x
  2. Step 2: Convert to fraction form
    220,311/304,029.18 = 130,887/x
  3. Step 3: Cross multiply
    220,311x = 304,029.18 × 130,887
  4. Step 4: Simplify right side
    220,311x = 39,793,467,282.66
  5. Step 5: Solve for x
    x = 39,793,467,282.66/220,311
  6. Step 6: Final answer
    x = 180,624.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.