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Finding the Fourth Proportional to 505,508.55, 757,723.35 and 252,290.40

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Solution

The fourth proportional to 505,508.55, 757,723.35 and 252,290.40 is: 378,166.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,508.55 : 757,723.35 = 252,290.40 : x
  2. Step 2: Convert to fraction form
    505,508.55/757,723.35 = 252,290.40/x
  3. Step 3: Cross multiply
    505,508.55x = 757,723.35 × 252,290.40
  4. Step 4: Simplify right side
    505,508.55x = 191,166,327,060.84
  5. Step 5: Solve for x
    x = 191,166,327,060.84/505,508.55
  6. Step 6: Final answer
    x = 378,166.36

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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.