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Finding the Fourth Proportional to 291,797.97, 402,712.17 and 171,040.72

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Solution

The fourth proportional to 291,797.97, 402,712.17 and 171,040.72 is: 236,054.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,797.97 : 402,712.17 = 171,040.72 : x
  2. Step 2: Convert to fraction form
    291,797.97/402,712.17 = 171,040.72/x
  3. Step 3: Cross multiply
    291,797.97x = 402,712.17 × 171,040.72
  4. Step 4: Simplify right side
    291,797.97x = 68,880,178,616.46
  5. Step 5: Solve for x
    x = 68,880,178,616.46/291,797.97
  6. Step 6: Final answer
    x = 236,054.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.