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Finding the Fourth Proportional to 327,079.60, 490,014.60 and 186,420.40

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Solution

The fourth proportional to 327,079.60, 490,014.60 and 186,420.40 is: 279,285.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,079.60 : 490,014.60 = 186,420.40 : x
  2. Step 2: Convert to fraction form
    327,079.60/490,014.60 = 186,420.40/x
  3. Step 3: Cross multiply
    327,079.60x = 490,014.60 × 186,420.40
  4. Step 4: Simplify right side
    327,079.60x = 91,348,717,737.84
  5. Step 5: Solve for x
    x = 91,348,717,737.84/327,079.60
  6. Step 6: Final answer
    x = 279,285.89

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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.