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Finding the Third Proportional to 315,117 and 471,555

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Solution

The third proportional to 315,117 and 471,555 is: 705,655.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,117 : 471,555 = 471,555 : x
  2. Step 2: Convert to fraction form
    315,117/471,555 = 471,555/x
  3. Step 3: Cross multiply
    315,117x = 471,555 × 471,555
  4. Step 4: Simplify right side
    315,117x = 222,364,118,025
  5. Step 5: Solve for x
    x = 222,364,118,025/315,117
  6. Step 6: Final answer
    x = 705,655.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.