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Finding the Fourth Proportional to 298,630.60, 447,936.30 and 98,960.20

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Solution

The fourth proportional to 298,630.60, 447,936.30 and 98,960.20 is: 148,437.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,630.60 : 447,936.30 = 98,960.20 : x
  2. Step 2: Convert to fraction form
    298,630.60/447,936.30 = 98,960.20/x
  3. Step 3: Cross multiply
    298,630.60x = 447,936.30 × 98,960.20
  4. Step 4: Simplify right side
    298,630.60x = 44,327,865,835.26
  5. Step 5: Solve for x
    x = 44,327,865,835.26/298,630.60
  6. Step 6: Final answer
    x = 148,437.12

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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.