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Finding the Fourth Proportional to 214,502.60, 321,753.90 and 205,401.80

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Solution

The fourth proportional to 214,502.60, 321,753.90 and 205,401.80 is: 308,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,502.60 : 321,753.90 = 205,401.80 : x
  2. Step 2: Convert to fraction form
    214,502.60/321,753.90 = 205,401.80/x
  3. Step 3: Cross multiply
    214,502.60x = 321,753.90 × 205,401.80
  4. Step 4: Simplify right side
    214,502.60x = 66,088,830,217.02
  5. Step 5: Solve for x
    x = 66,088,830,217.02/214,502.60
  6. Step 6: Final answer
    x = 308,102.70

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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.