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Finding the Fourth Proportional to 505,505.55, 757,718.85 and 252,287.40

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Solution

The fourth proportional to 505,505.55, 757,718.85 and 252,287.40 is: 378,161.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,505.55 : 757,718.85 = 252,287.40 : x
  2. Step 2: Convert to fraction form
    505,505.55/757,718.85 = 252,287.40/x
  3. Step 3: Cross multiply
    505,505.55x = 757,718.85 × 252,287.40
  4. Step 4: Simplify right side
    505,505.55x = 191,162,918,597.49
  5. Step 5: Solve for x
    x = 191,162,918,597.49/505,505.55
  6. Step 6: Final answer
    x = 378,161.86

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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.