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Finding the Fourth Proportional to 376,671.47, 519,810.21 and 206,905.59

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Solution

The fourth proportional to 376,671.47, 519,810.21 and 206,905.59 is: 285,531.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,671.47 : 519,810.21 = 206,905.59 : x
  2. Step 2: Convert to fraction form
    376,671.47/519,810.21 = 206,905.59/x
  3. Step 3: Cross multiply
    376,671.47x = 519,810.21 × 206,905.59
  4. Step 4: Simplify right side
    376,671.47x = 107,551,638,188.07
  5. Step 5: Solve for x
    x = 107,551,638,188.07/376,671.47
  6. Step 6: Final answer
    x = 285,531.69

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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.