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Finding the Fourth Proportional to 300,000.60, 450,000.90 and 252,761.40

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Solution

The fourth proportional to 300,000.60, 450,000.90 and 252,761.40 is: 379,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,000.60 : 450,000.90 = 252,761.40 : x
  2. Step 2: Convert to fraction form
    300,000.60/450,000.90 = 252,761.40/x
  3. Step 3: Cross multiply
    300,000.60x = 450,000.90 × 252,761.40
  4. Step 4: Simplify right side
    300,000.60x = 113,742,857,485.26
  5. Step 5: Solve for x
    x = 113,742,857,485.26/300,000.60
  6. Step 6: Final answer
    x = 379,142.10

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1.5x scale

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.