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Finding the Fourth Proportional to 279,144.65, 385,218.55 and 151,822.37

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Solution

The fourth proportional to 279,144.65, 385,218.55 and 151,822.37 is: 209,514.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,144.65 : 385,218.55 = 151,822.37 : x
  2. Step 2: Convert to fraction form
    279,144.65/385,218.55 = 151,822.37/x
  3. Step 3: Cross multiply
    279,144.65x = 385,218.55 × 151,822.37
  4. Step 4: Simplify right side
    279,144.65x = 58,484,794,381.79
  5. Step 5: Solve for x
    x = 58,484,794,381.79/279,144.65
  6. Step 6: Final answer
    x = 209,514.29

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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.