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Finding the Fourth Proportional to 212,627.88, 318,944.23 and 91,032.05

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Solution

The fourth proportional to 212,627.88, 318,944.23 and 91,032.05 is: 136,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,627.88 : 318,944.23 = 91,032.05 : x
  2. Step 2: Convert to fraction form
    212,627.88/318,944.23 = 91,032.05/x
  3. Step 3: Cross multiply
    212,627.88x = 318,944.23 × 91,032.05
  4. Step 4: Simplify right side
    212,627.88x = 29,034,147,662.35
  5. Step 5: Solve for x
    x = 29,034,147,662.35/212,627.88
  6. Step 6: Final answer
    x = 136,549.11

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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.