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Finding the Fourth Proportional to 279,983.92, 386,369.40 and 152,662

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Solution

The fourth proportional to 279,983.92, 386,369.40 and 152,662 is: 210,668.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,983.92 : 386,369.40 = 152,662 : x
  2. Step 2: Convert to fraction form
    279,983.92/386,369.40 = 152,662/x
  3. Step 3: Cross multiply
    279,983.92x = 386,369.40 × 152,662
  4. Step 4: Simplify right side
    279,983.92x = 58,983,925,342.80
  5. Step 5: Solve for x
    x = 58,983,925,342.80/279,983.92
  6. Step 6: Final answer
    x = 210,668.97

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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.