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Finding the Third Proportional to 291,276 and 457,690.50

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Solution

The third proportional to 291,276 and 457,690.50 is: 719,182.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,276 : 457,690.50 = 457,690.50 : x
  2. Step 2: Convert to fraction form
    291,276/457,690.50 = 457,690.50/x
  3. Step 3: Cross multiply
    291,276x = 457,690.50 × 457,690.50
  4. Step 4: Simplify right side
    291,276x = 209,480,593,790.25
  5. Step 5: Solve for x
    x = 209,480,593,790.25/291,276
  6. Step 6: Final answer
    x = 719,182.47

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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.