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Finding the Fourth Proportional to 279,673.77, 385,921.04 and 157,146.69

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Solution

The fourth proportional to 279,673.77, 385,921.04 and 157,146.69 is: 216,846.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,673.77 : 385,921.04 = 157,146.69 : x
  2. Step 2: Convert to fraction form
    279,673.77/385,921.04 = 157,146.69/x
  3. Step 3: Cross multiply
    279,673.77x = 385,921.04 × 157,146.69
  4. Step 4: Simplify right side
    279,673.77x = 60,646,213,251.62
  5. Step 5: Solve for x
    x = 60,646,213,251.62/279,673.77
  6. Step 6: Final answer
    x = 216,846.27

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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.