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Finding the Fourth Proportional to 298,991,803.80, 448,487,705.70 and 251,640,410.70

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Solution

The fourth proportional to 298,991,803.80, 448,487,705.70 and 251,640,410.70 is: 377,460,616.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,991,803.80 : 448,487,705.70 = 251,640,410.70 : x
  2. Step 2: Convert to fraction form
    298,991,803.80/448,487,705.70 = 251,640,410.70/x
  3. Step 3: Cross multiply
    298,991,803.80x = 448,487,705.70 × 251,640,410.70
  4. Step 4: Simplify right side
    298,991,803.80x = 112,857,630,456,248,720
  5. Step 5: Solve for x
    x = 112,857,630,456,248,720/298,991,803.80
  6. Step 6: Final answer
    x = 377,460,616.05

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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.