Home / 212,722.20-318,427.20-189,102.60

Finding the Fourth Proportional to 212,722.20, 318,427.20 and 189,102.60

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Solution

The fourth proportional to 212,722.20, 318,427.20 and 189,102.60 is: 283,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,722.20 : 318,427.20 = 189,102.60 : x
  2. Step 2: Convert to fraction form
    212,722.20/318,427.20 = 189,102.60/x
  3. Step 3: Cross multiply
    212,722.20x = 318,427.20 × 189,102.60
  4. Step 4: Simplify right side
    212,722.20x = 60,215,411,430.72
  5. Step 5: Solve for x
    x = 60,215,411,430.72/212,722.20
  6. Step 6: Final answer
    x = 283,070.65

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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.