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Finding the Fourth Proportional to 275,869, 380,699.58 and 156,637

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Solution

The fourth proportional to 275,869, 380,699.58 and 156,637 is: 216,159.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,869 : 380,699.58 = 156,637 : x
  2. Step 2: Convert to fraction form
    275,869/380,699.58 = 156,637/x
  3. Step 3: Cross multiply
    275,869x = 380,699.58 × 156,637
  4. Step 4: Simplify right side
    275,869x = 59,631,640,112.46
  5. Step 5: Solve for x
    x = 59,631,640,112.46/275,869
  6. Step 6: Final answer
    x = 216,159.26

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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.