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Finding the Fourth Proportional to 298,006.60, 446,966.70 and 87,622.60

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Solution

The fourth proportional to 298,006.60, 446,966.70 and 87,622.60 is: 131,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,006.60 : 446,966.70 = 87,622.60 : x
  2. Step 2: Convert to fraction form
    298,006.60/446,966.70 = 87,622.60/x
  3. Step 3: Cross multiply
    298,006.60x = 446,966.70 × 87,622.60
  4. Step 4: Simplify right side
    298,006.60x = 39,164,384,367.42
  5. Step 5: Solve for x
    x = 39,164,384,367.42/298,006.60
  6. Step 6: Final answer
    x = 131,421.20

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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.