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Finding the Third Proportional to 258,129.50 and 553,625.50

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Solution

The third proportional to 258,129.50 and 553,625.50 is: 1,187,393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,129.50 : 553,625.50 = 553,625.50 : x
  2. Step 2: Convert to fraction form
    258,129.50/553,625.50 = 553,625.50/x
  3. Step 3: Cross multiply
    258,129.50x = 553,625.50 × 553,625.50
  4. Step 4: Simplify right side
    258,129.50x = 306,501,194,250.25
  5. Step 5: Solve for x
    x = 306,501,194,250.25/258,129.50
  6. Step 6: Final answer
    x = 1,187,393.13

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.