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Finding the Fourth Proportional to 298,911,781.80, 448,367,672.70 and 177,979,429.80

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Solution

The fourth proportional to 298,911,781.80, 448,367,672.70 and 177,979,429.80 is: 266,969,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,911,781.80 : 448,367,672.70 = 177,979,429.80 : x
  2. Step 2: Convert to fraction form
    298,911,781.80/448,367,672.70 = 177,979,429.80/x
  3. Step 3: Cross multiply
    298,911,781.80x = 448,367,672.70 × 177,979,429.80
  4. Step 4: Simplify right side
    298,911,781.80x = 79,800,222,727,899,024
  5. Step 5: Solve for x
    x = 79,800,222,727,899,024/298,911,781.80
  6. Step 6: Final answer
    x = 266,969,144.70

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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.