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Finding the Fourth Proportional to 306,770.20, 457,691.20 and 273,090.40

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Solution

The fourth proportional to 306,770.20, 457,691.20 and 273,090.40 is: 407,442.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,770.20 : 457,691.20 = 273,090.40 : x
  2. Step 2: Convert to fraction form
    306,770.20/457,691.20 = 273,090.40/x
  3. Step 3: Cross multiply
    306,770.20x = 457,691.20 × 273,090.40
  4. Step 4: Simplify right side
    306,770.20x = 124,991,072,884.48
  5. Step 5: Solve for x
    x = 124,991,072,884.48/306,770.20
  6. Step 6: Final answer
    x = 407,442.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.