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Finding the Fourth Proportional to 421,078.96, 581,064.60 and 230,093.92

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Solution

The fourth proportional to 421,078.96, 581,064.60 and 230,093.92 is: 317,516.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,078.96 : 581,064.60 = 230,093.92 : x
  2. Step 2: Convert to fraction form
    421,078.96/581,064.60 = 230,093.92/x
  3. Step 3: Cross multiply
    421,078.96x = 581,064.60 × 230,093.92
  4. Step 4: Simplify right side
    421,078.96x = 133,699,431,587.23
  5. Step 5: Solve for x
    x = 133,699,431,587.23/421,078.96
  6. Step 6: Final answer
    x = 317,516.30

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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.