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Finding the Fourth Proportional to 312,794.70, 469,537.65 and 172,826.70

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Solution

The fourth proportional to 312,794.70, 469,537.65 and 172,826.70 is: 259,431.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,794.70 : 469,537.65 = 172,826.70 : x
  2. Step 2: Convert to fraction form
    312,794.70/469,537.65 = 172,826.70/x
  3. Step 3: Cross multiply
    312,794.70x = 469,537.65 × 172,826.70
  4. Step 4: Simplify right side
    312,794.70x = 81,148,642,575.26
  5. Step 5: Solve for x
    x = 81,148,642,575.26/312,794.70
  6. Step 6: Final answer
    x = 259,431.00

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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.