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Finding the Fourth Proportional to 231,485.20, 347,260.20 and 98,364.40

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Solution

The fourth proportional to 231,485.20, 347,260.20 and 98,364.40 is: 147,560.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,485.20 : 347,260.20 = 98,364.40 : x
  2. Step 2: Convert to fraction form
    231,485.20/347,260.20 = 98,364.40/x
  3. Step 3: Cross multiply
    231,485.20x = 347,260.20 × 98,364.40
  4. Step 4: Simplify right side
    231,485.20x = 34,158,041,216.88
  5. Step 5: Solve for x
    x = 34,158,041,216.88/231,485.20
  6. Step 6: Final answer
    x = 147,560.37

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1.5x scale

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.