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Finding the Fourth Proportional to 216,939.60, 325,190.70 and 98,695.80

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Solution

The fourth proportional to 216,939.60, 325,190.70 and 98,695.80 is: 147,944.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,939.60 : 325,190.70 = 98,695.80 : x
  2. Step 2: Convert to fraction form
    216,939.60/325,190.70 = 98,695.80/x
  3. Step 3: Cross multiply
    216,939.60x = 325,190.70 × 98,695.80
  4. Step 4: Simplify right side
    216,939.60x = 32,094,956,289.06
  5. Step 5: Solve for x
    x = 32,094,956,289.06/216,939.60
  6. Step 6: Final answer
    x = 147,944.20

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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.