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Finding the Fourth Proportional to 220,803.89, 304,749.12 and 130,154.48

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Solution

The fourth proportional to 220,803.89, 304,749.12 and 130,154.48 is: 179,636.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,803.89 : 304,749.12 = 130,154.48 : x
  2. Step 2: Convert to fraction form
    220,803.89/304,749.12 = 130,154.48/x
  3. Step 3: Cross multiply
    220,803.89x = 304,749.12 × 130,154.48
  4. Step 4: Simplify right side
    220,803.89x = 39,664,463,244.06
  5. Step 5: Solve for x
    x = 39,664,463,244.06/220,803.89
  6. Step 6: Final answer
    x = 179,636.61

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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.