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Finding the Fourth Proportional to 421,658.77, 581,893.68 and 230,668.06

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Solution

The fourth proportional to 421,658.77, 581,893.68 and 230,668.06 is: 318,324.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,658.77 : 581,893.68 = 230,668.06 : x
  2. Step 2: Convert to fraction form
    421,658.77/581,893.68 = 230,668.06/x
  3. Step 3: Cross multiply
    421,658.77x = 581,893.68 × 230,668.06
  4. Step 4: Simplify right side
    421,658.77x = 134,224,283,382.39
  5. Step 5: Solve for x
    x = 134,224,283,382.39/421,658.77
  6. Step 6: Final answer
    x = 318,324.42

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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.