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Finding the Fourth Proportional to 263,307.24, 395,001.72 and 85,772.88

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Solution

The fourth proportional to 263,307.24, 395,001.72 and 85,772.88 is: 128,672.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,307.24 : 395,001.72 = 85,772.88 : x
  2. Step 2: Convert to fraction form
    263,307.24/395,001.72 = 85,772.88/x
  3. Step 3: Cross multiply
    263,307.24x = 395,001.72 × 85,772.88
  4. Step 4: Simplify right side
    263,307.24x = 33,880,435,129.35
  5. Step 5: Solve for x
    x = 33,880,435,129.35/263,307.24
  6. Step 6: Final answer
    x = 128,672.63

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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.