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Finding the Third Proportional to 145,080 and 221,940

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Solution

The third proportional to 145,080 and 221,940 is: 339,518.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,080 : 221,940 = 221,940 : x
  2. Step 2: Convert to fraction form
    145,080/221,940 = 221,940/x
  3. Step 3: Cross multiply
    145,080x = 221,940 × 221,940
  4. Step 4: Simplify right side
    145,080x = 49,257,363,600
  5. Step 5: Solve for x
    x = 49,257,363,600/145,080
  6. Step 6: Final answer
    x = 339,518.64

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.