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Finding the Fourth Proportional to 273,431.60, 409,840.20 and 140,260.40

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Solution

The fourth proportional to 273,431.60, 409,840.20 and 140,260.40 is: 210,233.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,431.60 : 409,840.20 = 140,260.40 : x
  2. Step 2: Convert to fraction form
    273,431.60/409,840.20 = 140,260.40/x
  3. Step 3: Cross multiply
    273,431.60x = 409,840.20 × 140,260.40
  4. Step 4: Simplify right side
    273,431.60x = 57,484,350,388.08
  5. Step 5: Solve for x
    x = 57,484,350,388.08/273,431.60
  6. Step 6: Final answer
    x = 210,233.02

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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.