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Finding the Third Proportional to 249,222.50 and 391,689.75

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Solution

The third proportional to 249,222.50 and 391,689.75 is: 615,597.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,222.50 : 391,689.75 = 391,689.75 : x
  2. Step 2: Convert to fraction form
    249,222.50/391,689.75 = 391,689.75/x
  3. Step 3: Cross multiply
    249,222.50x = 391,689.75 × 391,689.75
  4. Step 4: Simplify right side
    249,222.50x = 153,420,860,255.06
  5. Step 5: Solve for x
    x = 153,420,860,255.06/249,222.50
  6. Step 6: Final answer
    x = 615,597.95

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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.