Home / 331,942.16-458,078.10-188,702.21

Finding the Fourth Proportional to 331,942.16, 458,078.10 and 188,702.21

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Solution

The fourth proportional to 331,942.16, 458,078.10 and 188,702.21 is: 260,407.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,942.16 : 458,078.10 = 188,702.21 : x
  2. Step 2: Convert to fraction form
    331,942.16/458,078.10 = 188,702.21/x
  3. Step 3: Cross multiply
    331,942.16x = 458,078.10 × 188,702.21
  4. Step 4: Simplify right side
    331,942.16x = 86,440,349,822.60
  5. Step 5: Solve for x
    x = 86,440,349,822.60/331,942.16
  6. Step 6: Final answer
    x = 260,407.87

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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.