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Finding the Third Proportional to 272,517.75 and 390,092.63

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Solution

The third proportional to 272,517.75 and 390,092.63 is: 558,393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,517.75 : 390,092.63 = 390,092.63 : x
  2. Step 2: Convert to fraction form
    272,517.75/390,092.63 = 390,092.63/x
  3. Step 3: Cross multiply
    272,517.75x = 390,092.63 × 390,092.63
  4. Step 4: Simplify right side
    272,517.75x = 152,172,256,079.39
  5. Step 5: Solve for x
    x = 152,172,256,079.39/272,517.75
  6. Step 6: Final answer
    x = 558,393.93

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.