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Finding the Fourth Proportional to 322,511.55, 484,283.70 and 256,500.60

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Solution

The fourth proportional to 322,511.55, 484,283.70 and 256,500.60 is: 385,161.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,511.55 : 484,283.70 = 256,500.60 : x
  2. Step 2: Convert to fraction form
    322,511.55/484,283.70 = 256,500.60/x
  3. Step 3: Cross multiply
    322,511.55x = 484,283.70 × 256,500.60
  4. Step 4: Simplify right side
    322,511.55x = 124,219,059,620.22
  5. Step 5: Solve for x
    x = 124,219,059,620.22/322,511.55
  6. Step 6: Final answer
    x = 385,161.58

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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.