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Finding the Fourth Proportional to 298,638.40, 412,120.98 and 164,502.40

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Solution

The fourth proportional to 298,638.40, 412,120.98 and 164,502.40 is: 227,013.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,638.40 : 412,120.98 = 164,502.40 : x
  2. Step 2: Convert to fraction form
    298,638.40/412,120.98 = 164,502.40/x
  3. Step 3: Cross multiply
    298,638.40x = 412,120.98 × 164,502.40
  4. Step 4: Simplify right side
    298,638.40x = 67,794,890,300.35
  5. Step 5: Solve for x
    x = 67,794,890,300.35/298,638.40
  6. Step 6: Final answer
    x = 227,013.31

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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.