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Finding the Fourth Proportional to 254,310.10, 381,465.15 and 76,798.60

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Solution

The fourth proportional to 254,310.10, 381,465.15 and 76,798.60 is: 115,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,310.10 : 381,465.15 = 76,798.60 : x
  2. Step 2: Convert to fraction form
    254,310.10/381,465.15 = 76,798.60/x
  3. Step 3: Cross multiply
    254,310.10x = 381,465.15 × 76,798.60
  4. Step 4: Simplify right side
    254,310.10x = 29,295,989,468.79
  5. Step 5: Solve for x
    x = 29,295,989,468.79/254,310.10
  6. Step 6: Final answer
    x = 115,197.90

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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.