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Finding the Fourth Proportional to 298,788.83, 447,857.06 and 147,090.31

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Solution

The fourth proportional to 298,788.83, 447,857.06 and 147,090.31 is: 220,474.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,788.83 : 447,857.06 = 147,090.31 : x
  2. Step 2: Convert to fraction form
    298,788.83/447,857.06 = 147,090.31/x
  3. Step 3: Cross multiply
    298,788.83x = 447,857.06 × 147,090.31
  4. Step 4: Simplify right side
    298,788.83x = 65,875,433,791.09
  5. Step 5: Solve for x
    x = 65,875,433,791.09/298,788.83
  6. Step 6: Final answer
    x = 220,474.89

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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.