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Finding the Third Proportional to 288,411.25 and 621,176.50

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Solution

The third proportional to 288,411.25 and 621,176.50 is: 1,337,882.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,411.25 : 621,176.50 = 621,176.50 : x
  2. Step 2: Convert to fraction form
    288,411.25/621,176.50 = 621,176.50/x
  3. Step 3: Cross multiply
    288,411.25x = 621,176.50 × 621,176.50
  4. Step 4: Simplify right side
    288,411.25x = 385,860,244,152.25
  5. Step 5: Solve for x
    x = 385,860,244,152.25/288,411.25
  6. Step 6: Final answer
    x = 1,337,882.08

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.