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Finding the Fourth Proportional to 343,670.85, 474,253.31 and 190,715.72

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Solution

The fourth proportional to 343,670.85, 474,253.31 and 190,715.72 is: 263,180.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,670.85 : 474,253.31 = 190,715.72 : x
  2. Step 2: Convert to fraction form
    343,670.85/474,253.31 = 190,715.72/x
  3. Step 3: Cross multiply
    343,670.85x = 474,253.31 × 190,715.72
  4. Step 4: Simplify right side
    343,670.85x = 90,447,559,584.56
  5. Step 5: Solve for x
    x = 90,447,559,584.56/343,670.85
  6. Step 6: Final answer
    x = 263,180.77

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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.