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Finding the Fourth Proportional to 323,291.72, 445,988.22 and 251,178.20

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Solution

The fourth proportional to 323,291.72, 445,988.22 and 251,178.20 is: 346,505.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,291.72 : 445,988.22 = 251,178.20 : x
  2. Step 2: Convert to fraction form
    323,291.72/445,988.22 = 251,178.20/x
  3. Step 3: Cross multiply
    323,291.72x = 445,988.22 × 251,178.20
  4. Step 4: Simplify right side
    323,291.72x = 112,022,518,320.80
  5. Step 5: Solve for x
    x = 112,022,518,320.80/323,291.72
  6. Step 6: Final answer
    x = 346,505.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.