Home / 312,845.50-432,083.19-212,068.54

Finding the Fourth Proportional to 312,845.50, 432,083.19 and 212,068.54

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Solution

The fourth proportional to 312,845.50, 432,083.19 and 212,068.54 is: 292,896.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,845.50 : 432,083.19 = 212,068.54 : x
  2. Step 2: Convert to fraction form
    312,845.50/432,083.19 = 212,068.54/x
  3. Step 3: Cross multiply
    312,845.50x = 432,083.19 × 212,068.54
  4. Step 4: Simplify right side
    312,845.50x = 91,631,251,261.84
  5. Step 5: Solve for x
    x = 91,631,251,261.84/312,845.50
  6. Step 6: Final answer
    x = 292,896.18

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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.