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Finding the Fourth Proportional to 421,661.35, 581,896.88 and 230,682.79

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Solution

The fourth proportional to 421,661.35, 581,896.88 and 230,682.79 is: 318,344.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,661.35 : 581,896.88 = 230,682.79 : x
  2. Step 2: Convert to fraction form
    421,661.35/581,896.88 = 230,682.79/x
  3. Step 3: Cross multiply
    421,661.35x = 581,896.88 × 230,682.79
  4. Step 4: Simplify right side
    421,661.35x = 134,233,595,770.70
  5. Step 5: Solve for x
    x = 134,233,595,770.70/421,661.35
  6. Step 6: Final answer
    x = 318,344.56

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1.5x scale

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.