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Finding the Fourth Proportional to 231,486.30, 347,079.60 and 98,330.40

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Solution

The fourth proportional to 231,486.30, 347,079.60 and 98,330.40 is: 147,431.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,486.30 : 347,079.60 = 98,330.40 : x
  2. Step 2: Convert to fraction form
    231,486.30/347,079.60 = 98,330.40/x
  3. Step 3: Cross multiply
    231,486.30x = 347,079.60 × 98,330.40
  4. Step 4: Simplify right side
    231,486.30x = 34,128,475,899.84
  5. Step 5: Solve for x
    x = 34,128,475,899.84/231,486.30
  6. Step 6: Final answer
    x = 147,431.95

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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.