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Finding the Fourth Proportional to 529,881.11, 731,242.44 and 288,169.82

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Solution

The fourth proportional to 529,881.11, 731,242.44 and 288,169.82 is: 397,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,881.11 : 731,242.44 = 288,169.82 : x
  2. Step 2: Convert to fraction form
    529,881.11/731,242.44 = 288,169.82/x
  3. Step 3: Cross multiply
    529,881.11x = 731,242.44 × 288,169.82
  4. Step 4: Simplify right side
    529,881.11x = 210,722,002,311.16
  5. Step 5: Solve for x
    x = 210,722,002,311.16/529,881.11
  6. Step 6: Final answer
    x = 397,677.89

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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.