Home / 256,887.09-354,270-220,577.19

Finding the Fourth Proportional to 256,887.09, 354,270 and 220,577.19

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Solution

The fourth proportional to 256,887.09, 354,270 and 220,577.19 is: 304,195.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,887.09 : 354,270 = 220,577.19 : x
  2. Step 2: Convert to fraction form
    256,887.09/354,270 = 220,577.19/x
  3. Step 3: Cross multiply
    256,887.09x = 354,270 × 220,577.19
  4. Step 4: Simplify right side
    256,887.09x = 78,143,881,101.30
  5. Step 5: Solve for x
    x = 78,143,881,101.30/256,887.09
  6. Step 6: Final answer
    x = 304,195.44

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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.