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Finding the Fourth Proportional to 646,388.02, 969,648.24 and 247,364.40

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Solution

The fourth proportional to 646,388.02, 969,648.24 and 247,364.40 is: 371,071.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,388.02 : 969,648.24 = 247,364.40 : x
  2. Step 2: Convert to fraction form
    646,388.02/969,648.24 = 247,364.40/x
  3. Step 3: Cross multiply
    646,388.02x = 969,648.24 × 247,364.40
  4. Step 4: Simplify right side
    646,388.02x = 239,856,455,098.66
  5. Step 5: Solve for x
    x = 239,856,455,098.66/646,388.02
  6. Step 6: Final answer
    x = 371,071.94

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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.