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Finding the Third Proportional to 142,432 and 213,258

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Solution

The third proportional to 142,432 and 213,258 is: 319,303.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,432 : 213,258 = 213,258 : x
  2. Step 2: Convert to fraction form
    142,432/213,258 = 213,258/x
  3. Step 3: Cross multiply
    142,432x = 213,258 × 213,258
  4. Step 4: Simplify right side
    142,432x = 45,478,974,564
  5. Step 5: Solve for x
    x = 45,478,974,564/142,432
  6. Step 6: Final answer
    x = 319,303.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.