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Finding the Fourth Proportional to 316,667.88, 474,957.66 and 79,995.88

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Solution

The fourth proportional to 316,667.88, 474,957.66 and 79,995.88 is: 119,982.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,667.88 : 474,957.66 = 79,995.88 : x
  2. Step 2: Convert to fraction form
    316,667.88/474,957.66 = 79,995.88/x
  3. Step 3: Cross multiply
    316,667.88x = 474,957.66 × 79,995.88
  4. Step 4: Simplify right side
    316,667.88x = 37,994,655,974.44
  5. Step 5: Solve for x
    x = 37,994,655,974.44/316,667.88
  6. Step 6: Final answer
    x = 119,982.66

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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.