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Finding the Fourth Proportional to 341,478.40, 512,217.60 and 163,942.60

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Solution

The fourth proportional to 341,478.40, 512,217.60 and 163,942.60 is: 245,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,478.40 : 512,217.60 = 163,942.60 : x
  2. Step 2: Convert to fraction form
    341,478.40/512,217.60 = 163,942.60/x
  3. Step 3: Cross multiply
    341,478.40x = 512,217.60 × 163,942.60
  4. Step 4: Simplify right side
    341,478.40x = 83,974,285,109.76
  5. Step 5: Solve for x
    x = 83,974,285,109.76/341,478.40
  6. Step 6: Final answer
    x = 245,913.90

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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.