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Finding the Third Proportional to 136,431 and 287,000.50

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Solution

The third proportional to 136,431 and 287,000.50 is: 603,743.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,431 : 287,000.50 = 287,000.50 : x
  2. Step 2: Convert to fraction form
    136,431/287,000.50 = 287,000.50/x
  3. Step 3: Cross multiply
    136,431x = 287,000.50 × 287,000.50
  4. Step 4: Simplify right side
    136,431x = 82,369,287,000.25
  5. Step 5: Solve for x
    x = 82,369,287,000.25/136,431
  6. Step 6: Final answer
    x = 603,743.19

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.