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Finding the Third Proportional to 287,239.50 and 454,618.50

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Solution

The third proportional to 287,239.50 and 454,618.50 is: 719,531.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,239.50 : 454,618.50 = 454,618.50 : x
  2. Step 2: Convert to fraction form
    287,239.50/454,618.50 = 454,618.50/x
  3. Step 3: Cross multiply
    287,239.50x = 454,618.50 × 454,618.50
  4. Step 4: Simplify right side
    287,239.50x = 206,677,980,542.25
  5. Step 5: Solve for x
    x = 206,677,980,542.25/287,239.50
  6. Step 6: Final answer
    x = 719,531.89

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.