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Finding the Fourth Proportional to 298,490,541.60, 447,310,659.60 and 220,156,138.20

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Solution

The fourth proportional to 298,490,541.60, 447,310,659.60 and 220,156,138.20 is: 329,920,629.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,490,541.60 : 447,310,659.60 = 220,156,138.20 : x
  2. Step 2: Convert to fraction form
    298,490,541.60/447,310,659.60 = 220,156,138.20/x
  3. Step 3: Cross multiply
    298,490,541.60x = 447,310,659.60 × 220,156,138.20
  4. Step 4: Simplify right side
    298,490,541.60x = 98,478,187,393,230,752
  5. Step 5: Solve for x
    x = 98,478,187,393,230,752/298,490,541.60
  6. Step 6: Final answer
    x = 329,920,629.53

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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.