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Finding the Fourth Proportional to 397,059.68, 547,946 and 215,771.68

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Solution

The fourth proportional to 397,059.68, 547,946 and 215,771.68 is: 297,766.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,059.68 : 547,946 = 215,771.68 : x
  2. Step 2: Convert to fraction form
    397,059.68/547,946 = 215,771.68/x
  3. Step 3: Cross multiply
    397,059.68x = 547,946 × 215,771.68
  4. Step 4: Simplify right side
    397,059.68x = 118,231,228,969.28
  5. Step 5: Solve for x
    x = 118,231,228,969.28/397,059.68
  6. Step 6: Final answer
    x = 297,766.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.