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Finding the Fourth Proportional to 328,841.32, 453,445.39 and 285,448.96

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Solution

The fourth proportional to 328,841.32, 453,445.39 and 285,448.96 is: 393,610.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,841.32 : 453,445.39 = 285,448.96 : x
  2. Step 2: Convert to fraction form
    328,841.32/453,445.39 = 285,448.96/x
  3. Step 3: Cross multiply
    328,841.32x = 453,445.39 × 285,448.96
  4. Step 4: Simplify right side
    328,841.32x = 129,435,515,915.91
  5. Step 5: Solve for x
    x = 129,435,515,915.91/328,841.32
  6. Step 6: Final answer
    x = 393,610.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.