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Finding the Fourth Proportional to 421,668.28, 581,906.80 and 230,677.56

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Solution

The fourth proportional to 421,668.28, 581,906.80 and 230,677.56 is: 318,337.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,668.28 : 581,906.80 = 230,677.56 : x
  2. Step 2: Convert to fraction form
    421,668.28/581,906.80 = 230,677.56/x
  3. Step 3: Cross multiply
    421,668.28x = 581,906.80 × 230,677.56
  4. Step 4: Simplify right side
    421,668.28x = 134,232,840,771.41
  5. Step 5: Solve for x
    x = 134,232,840,771.41/421,668.28
  6. Step 6: Final answer
    x = 318,337.53

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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.