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Finding the Fourth Proportional to 198,342.60, 297,708.30 and 98,615.40

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Solution

The fourth proportional to 198,342.60, 297,708.30 and 98,615.40 is: 148,019.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,342.60 : 297,708.30 = 98,615.40 : x
  2. Step 2: Convert to fraction form
    198,342.60/297,708.30 = 98,615.40/x
  3. Step 3: Cross multiply
    198,342.60x = 297,708.30 × 98,615.40
  4. Step 4: Simplify right side
    198,342.60x = 29,358,623,087.82
  5. Step 5: Solve for x
    x = 29,358,623,087.82/198,342.60
  6. Step 6: Final answer
    x = 148,019.76

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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.