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Finding the Fourth Proportional to 298,949.24, 448,422.24 and 128,145.80

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Solution

The fourth proportional to 298,949.24, 448,422.24 and 128,145.80 is: 192,218.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,949.24 : 448,422.24 = 128,145.80 : x
  2. Step 2: Convert to fraction form
    298,949.24/448,422.24 = 128,145.80/x
  3. Step 3: Cross multiply
    298,949.24x = 448,422.24 × 128,145.80
  4. Step 4: Simplify right side
    298,949.24x = 57,463,426,682.59
  5. Step 5: Solve for x
    x = 57,463,426,682.59/298,949.24
  6. Step 6: Final answer
    x = 192,218.01

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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.