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Finding the Fourth Proportional to 352,781.29, 486,780.47 and 207,709.32

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Solution

The fourth proportional to 352,781.29, 486,780.47 and 207,709.32 is: 286,604.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,781.29 : 486,780.47 = 207,709.32 : x
  2. Step 2: Convert to fraction form
    352,781.29/486,780.47 = 207,709.32/x
  3. Step 3: Cross multiply
    352,781.29x = 486,780.47 × 207,709.32
  4. Step 4: Simplify right side
    352,781.29x = 101,108,841,978.77
  5. Step 5: Solve for x
    x = 101,108,841,978.77/352,781.29
  6. Step 6: Final answer
    x = 286,604.89

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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.