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Finding the Fourth Proportional to 252,000.72, 378,074.90 and 74,512.35

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Solution

The fourth proportional to 252,000.72, 378,074.90 and 74,512.35 is: 111,790.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,000.72 : 378,074.90 = 74,512.35 : x
  2. Step 2: Convert to fraction form
    252,000.72/378,074.90 = 74,512.35/x
  3. Step 3: Cross multiply
    252,000.72x = 378,074.90 × 74,512.35
  4. Step 4: Simplify right side
    252,000.72x = 28,171,249,461.30
  5. Step 5: Solve for x
    x = 28,171,249,461.30/252,000.72
  6. Step 6: Final answer
    x = 111,790.35

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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.