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Finding the Fourth Proportional to 298,493.80, 447,740.70 and 88,131.40

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Solution

The fourth proportional to 298,493.80, 447,740.70 and 88,131.40 is: 132,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,493.80 : 447,740.70 = 88,131.40 : x
  2. Step 2: Convert to fraction form
    298,493.80/447,740.70 = 88,131.40/x
  3. Step 3: Cross multiply
    298,493.80x = 447,740.70 × 88,131.40
  4. Step 4: Simplify right side
    298,493.80x = 39,460,014,727.98
  5. Step 5: Solve for x
    x = 39,460,014,727.98/298,493.80
  6. Step 6: Final answer
    x = 132,197.10

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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.