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Finding the Third Proportional to 262,890 and 411,853.50

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Solution

The third proportional to 262,890 and 411,853.50 is: 645,225.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,890 : 411,853.50 = 411,853.50 : x
  2. Step 2: Convert to fraction form
    262,890/411,853.50 = 411,853.50/x
  3. Step 3: Cross multiply
    262,890x = 411,853.50 × 411,853.50
  4. Step 4: Simplify right side
    262,890x = 169,623,305,462.25
  5. Step 5: Solve for x
    x = 169,623,305,462.25/262,890
  6. Step 6: Final answer
    x = 645,225.40

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.