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Finding the Fourth Proportional to 421,696.34, 581,930.96 and 230,711.30

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Solution

The fourth proportional to 421,696.34, 581,930.96 and 230,711.30 is: 318,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,696.34 : 581,930.96 = 230,711.30 : x
  2. Step 2: Convert to fraction form
    421,696.34/581,930.96 = 230,711.30/x
  3. Step 3: Cross multiply
    421,696.34x = 581,930.96 × 230,711.30
  4. Step 4: Simplify right side
    421,696.34x = 134,258,048,291.85
  5. Step 5: Solve for x
    x = 134,258,048,291.85/421,696.34
  6. Step 6: Final answer
    x = 318,376.13

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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.