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Finding the Fourth Proportional to 144,294.39, 216,485.31 and 69,393.28

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Solution

The fourth proportional to 144,294.39, 216,485.31 and 69,393.28 is: 104,110.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,294.39 : 216,485.31 = 69,393.28 : x
  2. Step 2: Convert to fraction form
    144,294.39/216,485.31 = 69,393.28/x
  3. Step 3: Cross multiply
    144,294.39x = 216,485.31 × 69,393.28
  4. Step 4: Simplify right side
    144,294.39x = 15,022,625,732.72
  5. Step 5: Solve for x
    x = 15,022,625,732.72/144,294.39
  6. Step 6: Final answer
    x = 104,110.95

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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.