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Finding the Fourth Proportional to 231,679.20, 347,551.20 and 98,558.40

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Solution

The fourth proportional to 231,679.20, 347,551.20 and 98,558.40 is: 147,851.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,679.20 : 347,551.20 = 98,558.40 : x
  2. Step 2: Convert to fraction form
    231,679.20/347,551.20 = 98,558.40/x
  3. Step 3: Cross multiply
    231,679.20x = 347,551.20 × 98,558.40
  4. Step 4: Simplify right side
    231,679.20x = 34,254,090,190.08
  5. Step 5: Solve for x
    x = 34,254,090,190.08/231,679.20
  6. Step 6: Final answer
    x = 147,851.38

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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.