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Finding the Fourth Proportional to 325,145.40, 487,026.90 and 269,849.40

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Solution

The fourth proportional to 325,145.40, 487,026.90 and 269,849.40 is: 404,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,145.40 : 487,026.90 = 269,849.40 : x
  2. Step 2: Convert to fraction form
    325,145.40/487,026.90 = 269,849.40/x
  3. Step 3: Cross multiply
    325,145.40x = 487,026.90 × 269,849.40
  4. Step 4: Simplify right side
    325,145.40x = 131,423,916,748.86
  5. Step 5: Solve for x
    x = 131,423,916,748.86/325,145.40
  6. Step 6: Final answer
    x = 404,200.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.