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Finding the Fourth Proportional to 343,668.45, 474,261.48 and 190,729.72

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Solution

The fourth proportional to 343,668.45, 474,261.48 and 190,729.72 is: 263,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,668.45 : 474,261.48 = 190,729.72 : x
  2. Step 2: Convert to fraction form
    343,668.45/474,261.48 = 190,729.72/x
  3. Step 3: Cross multiply
    343,668.45x = 474,261.48 × 190,729.72
  4. Step 4: Simplify right side
    343,668.45x = 90,455,759,880.01
  5. Step 5: Solve for x
    x = 90,455,759,880.01/343,668.45
  6. Step 6: Final answer
    x = 263,206.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.