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Finding the Fourth Proportional to 529,850.30, 731,198.54 and 288,138.09

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Solution

The fourth proportional to 529,850.30, 731,198.54 and 288,138.09 is: 397,633.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,850.30 : 731,198.54 = 288,138.09 : x
  2. Step 2: Convert to fraction form
    529,850.30/731,198.54 = 288,138.09/x
  3. Step 3: Cross multiply
    529,850.30x = 731,198.54 × 288,138.09
  4. Step 4: Simplify right side
    529,850.30x = 210,686,154,188.73
  5. Step 5: Solve for x
    x = 210,686,154,188.73/529,850.30
  6. Step 6: Final answer
    x = 397,633.36

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1.5x scale

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.