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Finding the Fourth Proportional to 279,516.84, 385,673.22 and 166,317.48

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Solution

The fourth proportional to 279,516.84, 385,673.22 and 166,317.48 is: 229,482.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,516.84 : 385,673.22 = 166,317.48 : x
  2. Step 2: Convert to fraction form
    279,516.84/385,673.22 = 166,317.48/x
  3. Step 3: Cross multiply
    279,516.84x = 385,673.22 × 166,317.48
  4. Step 4: Simplify right side
    279,516.84x = 64,144,198,053.89
  5. Step 5: Solve for x
    x = 64,144,198,053.89/279,516.84
  6. Step 6: Final answer
    x = 229,482.41

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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.