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Finding the Fourth Proportional to 298,123.20, 447,127.75 and 115,754.01

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Solution

The fourth proportional to 298,123.20, 447,127.75 and 115,754.01 is: 173,608.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,123.20 : 447,127.75 = 115,754.01 : x
  2. Step 2: Convert to fraction form
    298,123.20/447,127.75 = 115,754.01/x
  3. Step 3: Cross multiply
    298,123.20x = 447,127.75 × 115,754.01
  4. Step 4: Simplify right side
    298,123.20x = 51,756,827,230.37
  5. Step 5: Solve for x
    x = 51,756,827,230.37/298,123.20
  6. Step 6: Final answer
    x = 173,608.86

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1.5x scale

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.