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Finding the Third Proportional to 249,929 and 387,104

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Solution

The third proportional to 249,929 and 387,104 is: 599,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,929 : 387,104 = 387,104 : x
  2. Step 2: Convert to fraction form
    249,929/387,104 = 387,104/x
  3. Step 3: Cross multiply
    249,929x = 387,104 × 387,104
  4. Step 4: Simplify right side
    249,929x = 149,849,506,816
  5. Step 5: Solve for x
    x = 149,849,506,816/249,929
  6. Step 6: Final answer
    x = 599,568.30

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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.