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Finding the Fourth Proportional to 408,318.57, 612,476.51 and 104,712.44

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Solution

The fourth proportional to 408,318.57, 612,476.51 and 104,712.44 is: 157,068.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,318.57 : 612,476.51 = 104,712.44 : x
  2. Step 2: Convert to fraction form
    408,318.57/612,476.51 = 104,712.44/x
  3. Step 3: Cross multiply
    408,318.57x = 612,476.51 × 104,712.44
  4. Step 4: Simplify right side
    408,318.57x = 64,133,906,218.84
  5. Step 5: Solve for x
    x = 64,133,906,218.84/408,318.57
  6. Step 6: Final answer
    x = 157,068.31

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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.