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Finding the Fourth Proportional to 296,499.80, 444,807.30 and 128,019.80

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Solution

The fourth proportional to 296,499.80, 444,807.30 and 128,019.80 is: 192,054.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,499.80 : 444,807.30 = 128,019.80 : x
  2. Step 2: Convert to fraction form
    296,499.80/444,807.30 = 128,019.80/x
  3. Step 3: Cross multiply
    296,499.80x = 444,807.30 × 128,019.80
  4. Step 4: Simplify right side
    296,499.80x = 56,944,141,584.54
  5. Step 5: Solve for x
    x = 56,944,141,584.54/296,499.80
  6. Step 6: Final answer
    x = 192,054.57

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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.