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Finding the Fourth Proportional to 505,131.21, 757,294.50 and 291,656.98

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Solution

The fourth proportional to 505,131.21, 757,294.50 and 291,656.98 is: 437,253.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,131.21 : 757,294.50 = 291,656.98 : x
  2. Step 2: Convert to fraction form
    505,131.21/757,294.50 = 291,656.98/x
  3. Step 3: Cross multiply
    505,131.21x = 757,294.50 × 291,656.98
  4. Step 4: Simplify right side
    505,131.21x = 220,870,228,880.94
  5. Step 5: Solve for x
    x = 220,870,228,880.94/505,131.21
  6. Step 6: Final answer
    x = 437,253.18

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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.