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Finding the Fourth Proportional to 264,835.80, 397,407.30 and 98,640.60

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Solution

The fourth proportional to 264,835.80, 397,407.30 and 98,640.60 is: 148,018.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,835.80 : 397,407.30 = 98,640.60 : x
  2. Step 2: Convert to fraction form
    264,835.80/397,407.30 = 98,640.60/x
  3. Step 3: Cross multiply
    264,835.80x = 397,407.30 × 98,640.60
  4. Step 4: Simplify right side
    264,835.80x = 39,200,494,516.38
  5. Step 5: Solve for x
    x = 39,200,494,516.38/264,835.80
  6. Step 6: Final answer
    x = 148,018.11

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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.