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Finding the Fourth Proportional to 262,353.20, 393,076.20 and 121,823.60

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Solution

The fourth proportional to 262,353.20, 393,076.20 and 121,823.60 is: 182,524.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,353.20 : 393,076.20 = 121,823.60 : x
  2. Step 2: Convert to fraction form
    262,353.20/393,076.20 = 121,823.60/x
  3. Step 3: Cross multiply
    262,353.20x = 393,076.20 × 121,823.60
  4. Step 4: Simplify right side
    262,353.20x = 47,885,957,758.32
  5. Step 5: Solve for x
    x = 47,885,957,758.32/262,353.20
  6. Step 6: Final answer
    x = 182,524.77

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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.