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Finding the Third Proportional to 162,905 and 252,240

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Solution

The third proportional to 162,905 and 252,240 is: 390,565.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,905 : 252,240 = 252,240 : x
  2. Step 2: Convert to fraction form
    162,905/252,240 = 252,240/x
  3. Step 3: Cross multiply
    162,905x = 252,240 × 252,240
  4. Step 4: Simplify right side
    162,905x = 63,625,017,600
  5. Step 5: Solve for x
    x = 63,625,017,600/162,905
  6. Step 6: Final answer
    x = 390,565.16

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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.