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Finding the Third Proportional to 249,282 and 349,785

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Solution

The third proportional to 249,282 and 349,785 is: 490,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,282 : 349,785 = 349,785 : x
  2. Step 2: Convert to fraction form
    249,282/349,785 = 349,785/x
  3. Step 3: Cross multiply
    249,282x = 349,785 × 349,785
  4. Step 4: Simplify right side
    249,282x = 122,349,546,225
  5. Step 5: Solve for x
    x = 122,349,546,225/249,282
  6. Step 6: Final answer
    x = 490,807.78

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.