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Finding the Fourth Proportional to 352,773.23, 486,897.90 and 209,505.59

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Solution

The fourth proportional to 352,773.23, 486,897.90 and 209,505.59 is: 289,159.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,773.23 : 486,897.90 = 209,505.59 : x
  2. Step 2: Convert to fraction form
    352,773.23/486,897.90 = 209,505.59/x
  3. Step 3: Cross multiply
    352,773.23x = 486,897.90 × 209,505.59
  4. Step 4: Simplify right side
    352,773.23x = 102,007,829,374.77
  5. Step 5: Solve for x
    x = 102,007,829,374.77/352,773.23
  6. Step 6: Final answer
    x = 289,159.78

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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.