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Finding the Third Proportional to 287,695.50 and 425,968.50

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Solution

The third proportional to 287,695.50 and 425,968.50 is: 630,698.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,695.50 : 425,968.50 = 425,968.50 : x
  2. Step 2: Convert to fraction form
    287,695.50/425,968.50 = 425,968.50/x
  3. Step 3: Cross multiply
    287,695.50x = 425,968.50 × 425,968.50
  4. Step 4: Simplify right side
    287,695.50x = 181,449,162,992.25
  5. Step 5: Solve for x
    x = 181,449,162,992.25/287,695.50
  6. Step 6: Final answer
    x = 630,698.65

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.