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Finding the Fourth Proportional to 300,387.59, 450,524.03 and 90,025.53

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Solution

The fourth proportional to 300,387.59, 450,524.03 and 90,025.53 is: 135,021.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,387.59 : 450,524.03 = 90,025.53 : x
  2. Step 2: Convert to fraction form
    300,387.59/450,524.03 = 90,025.53/x
  3. Step 3: Cross multiply
    300,387.59x = 450,524.03 × 90,025.53
  4. Step 4: Simplify right side
    300,387.59x = 40,558,662,438.89
  5. Step 5: Solve for x
    x = 40,558,662,438.89/300,387.59
  6. Step 6: Final answer
    x = 135,021.10

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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.