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Finding the Third Proportional to 255,587 and 386,962.50

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Solution

The third proportional to 255,587 and 386,962.50 is: 585,866.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,587 : 386,962.50 = 386,962.50 : x
  2. Step 2: Convert to fraction form
    255,587/386,962.50 = 386,962.50/x
  3. Step 3: Cross multiply
    255,587x = 386,962.50 × 386,962.50
  4. Step 4: Simplify right side
    255,587x = 149,739,976,406.25
  5. Step 5: Solve for x
    x = 149,739,976,406.25/255,587
  6. Step 6: Final answer
    x = 585,866.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.