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Finding the Third Proportional to 290,466 and 456,435

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Solution

The third proportional to 290,466 and 456,435 is: 717,236.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,466 : 456,435 = 456,435 : x
  2. Step 2: Convert to fraction form
    290,466/456,435 = 456,435/x
  3. Step 3: Cross multiply
    290,466x = 456,435 × 456,435
  4. Step 4: Simplify right side
    290,466x = 208,332,909,225
  5. Step 5: Solve for x
    x = 208,332,909,225/290,466
  6. Step 6: Final answer
    x = 717,236.82

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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.