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Finding the Fourth Proportional to 144,616.11, 216,917.78 and 39,435.09

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Solution

The fourth proportional to 144,616.11, 216,917.78 and 39,435.09 is: 59,150.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,616.11 : 216,917.78 = 39,435.09 : x
  2. Step 2: Convert to fraction form
    144,616.11/216,917.78 = 39,435.09/x
  3. Step 3: Cross multiply
    144,616.11x = 216,917.78 × 39,435.09
  4. Step 4: Simplify right side
    144,616.11x = 8,554,171,979.72
  5. Step 5: Solve for x
    x = 8,554,171,979.72/144,616.11
  6. Step 6: Final answer
    x = 59,150.89

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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.