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Finding the Fourth Proportional to 328,861.20, 493,291.80 and 151,714.20

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Solution

The fourth proportional to 328,861.20, 493,291.80 and 151,714.20 is: 227,571.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,861.20 : 493,291.80 = 151,714.20 : x
  2. Step 2: Convert to fraction form
    328,861.20/493,291.80 = 151,714.20/x
  3. Step 3: Cross multiply
    328,861.20x = 493,291.80 × 151,714.20
  4. Step 4: Simplify right side
    328,861.20x = 74,839,370,803.56
  5. Step 5: Solve for x
    x = 74,839,370,803.56/328,861.20
  6. Step 6: Final answer
    x = 227,571.30

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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.