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Finding the Fourth Proportional to 298,467.80, 447,701.70 and 88,105.40

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Solution

The fourth proportional to 298,467.80, 447,701.70 and 88,105.40 is: 132,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,467.80 : 447,701.70 = 88,105.40 : x
  2. Step 2: Convert to fraction form
    298,467.80/447,701.70 = 88,105.40/x
  3. Step 3: Cross multiply
    298,467.80x = 447,701.70 × 88,105.40
  4. Step 4: Simplify right side
    298,467.80x = 39,444,937,359.18
  5. Step 5: Solve for x
    x = 39,444,937,359.18/298,467.80
  6. Step 6: Final answer
    x = 132,158.10

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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.