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Finding the Fourth Proportional to 262,551.20, 393,373.20 and 122,021.60

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Solution

The fourth proportional to 262,551.20, 393,373.20 and 122,021.60 is: 182,821.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,551.20 : 393,373.20 = 122,021.60 : x
  2. Step 2: Convert to fraction form
    262,551.20/393,373.20 = 122,021.60/x
  3. Step 3: Cross multiply
    262,551.20x = 393,373.20 × 122,021.60
  4. Step 4: Simplify right side
    262,551.20x = 48,000,027,261.12
  5. Step 5: Solve for x
    x = 48,000,027,261.12/262,551.20
  6. Step 6: Final answer
    x = 182,821.59

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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.