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Finding the Fourth Proportional to 211,861.53, 317,792.79 and 51,938.16

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Solution

The fourth proportional to 211,861.53, 317,792.79 and 51,938.16 is: 77,907.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,861.53 : 317,792.79 = 51,938.16 : x
  2. Step 2: Convert to fraction form
    211,861.53/317,792.79 = 51,938.16/x
  3. Step 3: Cross multiply
    211,861.53x = 317,792.79 × 51,938.16
  4. Step 4: Simplify right side
    211,861.53x = 16,505,572,773.87
  5. Step 5: Solve for x
    x = 16,505,572,773.87/211,861.53
  6. Step 6: Final answer
    x = 77,907.36

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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.