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Finding the Fourth Proportional to 229,994.71, 317,392.63 and 128,017.97

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Solution

The fourth proportional to 229,994.71, 317,392.63 and 128,017.97 is: 176,664.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,994.71 : 317,392.63 = 128,017.97 : x
  2. Step 2: Convert to fraction form
    229,994.71/317,392.63 = 128,017.97/x
  3. Step 3: Cross multiply
    229,994.71x = 317,392.63 × 128,017.97
  4. Step 4: Simplify right side
    229,994.71x = 40,631,959,468.78
  5. Step 5: Solve for x
    x = 40,631,959,468.78/229,994.71
  6. Step 6: Final answer
    x = 176,664.76

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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.