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Finding the Third Proportional to 118,557 and 256,790.25

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Solution

The third proportional to 118,557 and 256,790.25 is: 556,198.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,557 : 256,790.25 = 256,790.25 : x
  2. Step 2: Convert to fraction form
    118,557/256,790.25 = 256,790.25/x
  3. Step 3: Cross multiply
    118,557x = 256,790.25 × 256,790.25
  4. Step 4: Simplify right side
    118,557x = 65,941,232,495.06
  5. Step 5: Solve for x
    x = 65,941,232,495.06/118,557
  6. Step 6: Final answer
    x = 556,198.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.