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Finding the Fourth Proportional to 328,672.80, 492,863.40 and 151,234.20

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Solution

The fourth proportional to 328,672.80, 492,863.40 and 151,234.20 is: 226,784.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,672.80 : 492,863.40 = 151,234.20 : x
  2. Step 2: Convert to fraction form
    328,672.80/492,863.40 = 151,234.20/x
  3. Step 3: Cross multiply
    328,672.80x = 492,863.40 × 151,234.20
  4. Step 4: Simplify right side
    328,672.80x = 74,537,802,008.28
  5. Step 5: Solve for x
    x = 74,537,802,008.28/328,672.80
  6. Step 6: Final answer
    x = 226,784.21

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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.