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Finding the Fourth Proportional to 529,859.30, 731,210.73 and 288,144.17

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Solution

The fourth proportional to 529,859.30, 731,210.73 and 288,144.17 is: 397,641.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,859.30 : 731,210.73 = 288,144.17 : x
  2. Step 2: Convert to fraction form
    529,859.30/731,210.73 = 288,144.17/x
  3. Step 3: Cross multiply
    529,859.30x = 731,210.73 × 288,144.17
  4. Step 4: Simplify right side
    529,859.30x = 210,694,108,890.94
  5. Step 5: Solve for x
    x = 210,694,108,890.94/529,859.30
  6. Step 6: Final answer
    x = 397,641.62

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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.