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Finding the Third Proportional to 145,438 and 213,368

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Solution

The third proportional to 145,438 and 213,368 is: 313,026.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,438 : 213,368 = 213,368 : x
  2. Step 2: Convert to fraction form
    145,438/213,368 = 213,368/x
  3. Step 3: Cross multiply
    145,438x = 213,368 × 213,368
  4. Step 4: Simplify right side
    145,438x = 45,525,903,424
  5. Step 5: Solve for x
    x = 45,525,903,424/145,438
  6. Step 6: Final answer
    x = 313,026.19

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.