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Finding the Fourth Proportional to 529,908.60, 731,282.46 and 288,195.96

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Solution

The fourth proportional to 529,908.60, 731,282.46 and 288,195.96 is: 397,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,908.60 : 731,282.46 = 288,195.96 : x
  2. Step 2: Convert to fraction form
    529,908.60/731,282.46 = 288,195.96/x
  3. Step 3: Cross multiply
    529,908.60x = 731,282.46 × 288,195.96
  4. Step 4: Simplify right side
    529,908.60x = 210,752,650,590.86
  5. Step 5: Solve for x
    x = 210,752,650,590.86/529,908.60
  6. Step 6: Final answer
    x = 397,715.10

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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.