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Finding the Third Proportional to 249,411 and 516,555

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Solution

The third proportional to 249,411 and 516,555 is: 1,069,836.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,411 : 516,555 = 516,555 : x
  2. Step 2: Convert to fraction form
    249,411/516,555 = 516,555/x
  3. Step 3: Cross multiply
    249,411x = 516,555 × 516,555
  4. Step 4: Simplify right side
    249,411x = 266,829,068,025
  5. Step 5: Solve for x
    x = 266,829,068,025/249,411
  6. Step 6: Final answer
    x = 1,069,836.81

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.