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Finding the Fourth Proportional to 254,271.85, 381,255.57 and 85,788.46

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Solution

The fourth proportional to 254,271.85, 381,255.57 and 85,788.46 is: 128,631.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,271.85 : 381,255.57 = 85,788.46 : x
  2. Step 2: Convert to fraction form
    254,271.85/381,255.57 = 85,788.46/x
  3. Step 3: Cross multiply
    254,271.85x = 381,255.57 × 85,788.46
  4. Step 4: Simplify right side
    254,271.85x = 32,707,328,216.72
  5. Step 5: Solve for x
    x = 32,707,328,216.72/254,271.85
  6. Step 6: Final answer
    x = 128,631.34

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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.