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Finding the Fourth Proportional to 212,548.57, 318,864.90 and 60,747.01

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Solution

The fourth proportional to 212,548.57, 318,864.90 and 60,747.01 is: 91,132.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,548.57 : 318,864.90 = 60,747.01 : x
  2. Step 2: Convert to fraction form
    212,548.57/318,864.90 = 60,747.01/x
  3. Step 3: Cross multiply
    212,548.57x = 318,864.90 × 60,747.01
  4. Step 4: Simplify right side
    212,548.57x = 19,370,089,268.95
  5. Step 5: Solve for x
    x = 19,370,089,268.95/212,548.57
  6. Step 6: Final answer
    x = 91,132.53

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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.