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Finding the Fourth Proportional to 374,164.20, 561,246.30 and 323,425.80

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Solution

The fourth proportional to 374,164.20, 561,246.30 and 323,425.80 is: 485,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,164.20 : 561,246.30 = 323,425.80 : x
  2. Step 2: Convert to fraction form
    374,164.20/561,246.30 = 323,425.80/x
  3. Step 3: Cross multiply
    374,164.20x = 561,246.30 × 323,425.80
  4. Step 4: Simplify right side
    374,164.20x = 181,521,533,574.54
  5. Step 5: Solve for x
    x = 181,521,533,574.54/374,164.20
  6. Step 6: Final answer
    x = 485,138.70

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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.