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Finding the Fourth Proportional to 279,329.52, 385,409.16 and 158,442.96

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Solution

The fourth proportional to 279,329.52, 385,409.16 and 158,442.96 is: 218,614.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,329.52 : 385,409.16 = 158,442.96 : x
  2. Step 2: Convert to fraction form
    279,329.52/385,409.16 = 158,442.96/x
  3. Step 3: Cross multiply
    279,329.52x = 385,409.16 × 158,442.96
  4. Step 4: Simplify right side
    279,329.52x = 61,065,368,121.51
  5. Step 5: Solve for x
    x = 61,065,368,121.51/279,329.52
  6. Step 6: Final answer
    x = 218,614.09

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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.