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Finding the Third Proportional to 249,918.50 and 399,714.75

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Solution

The third proportional to 249,918.50 and 399,714.75 is: 639,295.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,918.50 : 399,714.75 = 399,714.75 : x
  2. Step 2: Convert to fraction form
    249,918.50/399,714.75 = 399,714.75/x
  3. Step 3: Cross multiply
    249,918.50x = 399,714.75 × 399,714.75
  4. Step 4: Simplify right side
    249,918.50x = 159,771,881,367.56
  5. Step 5: Solve for x
    x = 159,771,881,367.56/249,918.50
  6. Step 6: Final answer
    x = 639,295.94

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.