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Finding the Fourth Proportional to 529,529.36, 730,755.36 and 287,812.49

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Solution

The fourth proportional to 529,529.36, 730,755.36 and 287,812.49 is: 397,183.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,529.36 : 730,755.36 = 287,812.49 : x
  2. Step 2: Convert to fraction form
    529,529.36/730,755.36 = 287,812.49/x
  3. Step 3: Cross multiply
    529,529.36x = 730,755.36 × 287,812.49
  4. Step 4: Simplify right side
    529,529.36x = 210,320,516,088.67
  5. Step 5: Solve for x
    x = 210,320,516,088.67/529,529.36
  6. Step 6: Final answer
    x = 397,183.87

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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.