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Finding the Third Proportional to 249,135 and 386,828

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Solution

The third proportional to 249,135 and 386,828 is: 600,621.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,135 : 386,828 = 386,828 : x
  2. Step 2: Convert to fraction form
    249,135/386,828 = 386,828/x
  3. Step 3: Cross multiply
    249,135x = 386,828 × 386,828
  4. Step 4: Simplify right side
    249,135x = 149,635,901,584
  5. Step 5: Solve for x
    x = 149,635,901,584/249,135
  6. Step 6: Final answer
    x = 600,621.76

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.