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Finding the Fourth Proportional to 645,340.40, 968,010 and 196,059.44

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Solution

The fourth proportional to 645,340.40, 968,010 and 196,059.44 is: 294,088.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,340.40 : 968,010 = 196,059.44 : x
  2. Step 2: Convert to fraction form
    645,340.40/968,010 = 196,059.44/x
  3. Step 3: Cross multiply
    645,340.40x = 968,010 × 196,059.44
  4. Step 4: Simplify right side
    645,340.40x = 189,787,498,514.40
  5. Step 5: Solve for x
    x = 189,787,498,514.40/645,340.40
  6. Step 6: Final answer
    x = 294,088.98

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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.