Home / 285,165.26-393,528.56-156,103.82

Finding the Fourth Proportional to 285,165.26, 393,528.56 and 156,103.82

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Solution

The fourth proportional to 285,165.26, 393,528.56 and 156,103.82 is: 215,423.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,165.26 : 393,528.56 = 156,103.82 : x
  2. Step 2: Convert to fraction form
    285,165.26/393,528.56 = 156,103.82/x
  3. Step 3: Cross multiply
    285,165.26x = 393,528.56 × 156,103.82
  4. Step 4: Simplify right side
    285,165.26x = 61,431,310,714.58
  5. Step 5: Solve for x
    x = 61,431,310,714.58/285,165.26
  6. Step 6: Final answer
    x = 215,423.54

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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.