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Finding the Fourth Proportional to 229,621.80, 343,818.30 and 146,063.40

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Solution

The fourth proportional to 229,621.80, 343,818.30 and 146,063.40 is: 218,704.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,621.80 : 343,818.30 = 146,063.40 : x
  2. Step 2: Convert to fraction form
    229,621.80/343,818.30 = 146,063.40/x
  3. Step 3: Cross multiply
    229,621.80x = 343,818.30 × 146,063.40
  4. Step 4: Simplify right side
    229,621.80x = 50,219,269,880.22
  5. Step 5: Solve for x
    x = 50,219,269,880.22/229,621.80
  6. Step 6: Final answer
    x = 218,704.28

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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.