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Finding the Fourth Proportional to 328,858.20, 493,287.30 and 151,711.20

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Solution

The fourth proportional to 328,858.20, 493,287.30 and 151,711.20 is: 227,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,858.20 : 493,287.30 = 151,711.20 : x
  2. Step 2: Convert to fraction form
    328,858.20/493,287.30 = 151,711.20/x
  3. Step 3: Cross multiply
    328,858.20x = 493,287.30 × 151,711.20
  4. Step 4: Simplify right side
    328,858.20x = 74,837,208,227.76
  5. Step 5: Solve for x
    x = 74,837,208,227.76/328,858.20
  6. Step 6: Final answer
    x = 227,566.80

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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.