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Finding the Fourth Proportional to 347,830.60, 521,745.90 and 98,512.60

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Solution

The fourth proportional to 347,830.60, 521,745.90 and 98,512.60 is: 147,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,830.60 : 521,745.90 = 98,512.60 : x
  2. Step 2: Convert to fraction form
    347,830.60/521,745.90 = 98,512.60/x
  3. Step 3: Cross multiply
    347,830.60x = 521,745.90 × 98,512.60
  4. Step 4: Simplify right side
    347,830.60x = 51,398,545,148.34
  5. Step 5: Solve for x
    x = 51,398,545,148.34/347,830.60
  6. Step 6: Final answer
    x = 147,768.90

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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.