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Finding the Fourth Proportional to 529,699.13, 730,992.77 and 287,981.16

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Solution

The fourth proportional to 529,699.13, 730,992.77 and 287,981.16 is: 397,418.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,699.13 : 730,992.77 = 287,981.16 : x
  2. Step 2: Convert to fraction form
    529,699.13/730,992.77 = 287,981.16/x
  3. Step 3: Cross multiply
    529,699.13x = 730,992.77 × 287,981.16
  4. Step 4: Simplify right side
    529,699.13x = 210,512,142,755.01
  5. Step 5: Solve for x
    x = 210,512,142,755.01/529,699.13
  6. Step 6: Final answer
    x = 397,418.33

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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.