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Finding the Fourth Proportional to 144,498.80, 217,007.40 and 139,833.20

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Solution

The fourth proportional to 144,498.80, 217,007.40 and 139,833.20 is: 210,000.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,498.80 : 217,007.40 = 139,833.20 : x
  2. Step 2: Convert to fraction form
    144,498.80/217,007.40 = 139,833.20/x
  3. Step 3: Cross multiply
    144,498.80x = 217,007.40 × 139,833.20
  4. Step 4: Simplify right side
    144,498.80x = 30,344,839,165.68
  5. Step 5: Solve for x
    x = 30,344,839,165.68/144,498.80
  6. Step 6: Final answer
    x = 210,000.63

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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.