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Finding the Fourth Proportional to 379,743.72, 524,046.54 and 216,395.58

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Solution

The fourth proportional to 379,743.72, 524,046.54 and 216,395.58 is: 298,626.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,743.72 : 524,046.54 = 216,395.58 : x
  2. Step 2: Convert to fraction form
    379,743.72/524,046.54 = 216,395.58/x
  3. Step 3: Cross multiply
    379,743.72x = 524,046.54 × 216,395.58
  4. Step 4: Simplify right side
    379,743.72x = 113,401,354,970.29
  5. Step 5: Solve for x
    x = 113,401,354,970.29/379,743.72
  6. Step 6: Final answer
    x = 298,626.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.