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Finding the Fourth Proportional to 379,898.47, 524,272.84 and 216,579.13

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Solution

The fourth proportional to 379,898.47, 524,272.84 and 216,579.13 is: 298,886.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,898.47 : 524,272.84 = 216,579.13 : x
  2. Step 2: Convert to fraction form
    379,898.47/524,272.84 = 216,579.13/x
  3. Step 3: Cross multiply
    379,898.47x = 524,272.84 × 216,579.13
  4. Step 4: Simplify right side
    379,898.47x = 113,546,553,717.70
  5. Step 5: Solve for x
    x = 113,546,553,717.70/379,898.47
  6. Step 6: Final answer
    x = 298,886.58

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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.