Home / 286,068.88-394,785.60-172,869.76

Finding the Fourth Proportional to 286,068.88, 394,785.60 and 172,869.76

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Solution

The fourth proportional to 286,068.88, 394,785.60 and 172,869.76 is: 238,566.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,068.88 : 394,785.60 = 172,869.76 : x
  2. Step 2: Convert to fraction form
    286,068.88/394,785.60 = 172,869.76/x
  3. Step 3: Cross multiply
    286,068.88x = 394,785.60 × 172,869.76
  4. Step 4: Simplify right side
    286,068.88x = 68,246,491,923.46
  5. Step 5: Solve for x
    x = 68,246,491,923.46/286,068.88
  6. Step 6: Final answer
    x = 238,566.64

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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.