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Finding the Third Proportional to 155,553 and 240,621

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Solution

The third proportional to 155,553 and 240,621 is: 372,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,553 : 240,621 = 240,621 : x
  2. Step 2: Convert to fraction form
    155,553/240,621 = 240,621/x
  3. Step 3: Cross multiply
    155,553x = 240,621 × 240,621
  4. Step 4: Simplify right side
    155,553x = 57,898,465,641
  5. Step 5: Solve for x
    x = 57,898,465,641/155,553
  6. Step 6: Final answer
    x = 372,210.54

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.