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Finding the Fourth Proportional to 279,603.53, 385,857.26 and 152,279.02

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Solution

The fourth proportional to 279,603.53, 385,857.26 and 152,279.02 is: 210,147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,603.53 : 385,857.26 = 152,279.02 : x
  2. Step 2: Convert to fraction form
    279,603.53/385,857.26 = 152,279.02/x
  3. Step 3: Cross multiply
    279,603.53x = 385,857.26 × 152,279.02
  4. Step 4: Simplify right side
    279,603.53x = 58,757,965,412.69
  5. Step 5: Solve for x
    x = 58,757,965,412.69/279,603.53
  6. Step 6: Final answer
    x = 210,147.44

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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.