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Finding the Third Proportional to 249,481.50 and 390,911.63

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Solution

The third proportional to 249,481.50 and 390,911.63 is: 612,517.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,481.50 : 390,911.63 = 390,911.63 : x
  2. Step 2: Convert to fraction form
    249,481.50/390,911.63 = 390,911.63/x
  3. Step 3: Cross multiply
    249,481.50x = 390,911.63 × 390,911.63
  4. Step 4: Simplify right side
    249,481.50x = 152,811,898,560.14
  5. Step 5: Solve for x
    x = 152,811,898,560.14/249,481.50
  6. Step 6: Final answer
    x = 612,517.96

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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.