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Finding the Fourth Proportional to 212,390.46, 318,629.43 and 177,573.42

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Solution

The fourth proportional to 212,390.46, 318,629.43 and 177,573.42 is: 266,396.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,390.46 : 318,629.43 = 177,573.42 : x
  2. Step 2: Convert to fraction form
    212,390.46/318,629.43 = 177,573.42/x
  3. Step 3: Cross multiply
    212,390.46x = 318,629.43 × 177,573.42
  4. Step 4: Simplify right side
    212,390.46x = 56,580,117,597.75
  5. Step 5: Solve for x
    x = 56,580,117,597.75/212,390.46
  6. Step 6: Final answer
    x = 266,396.70

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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.