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Finding the Fourth Proportional to 421,665.46, 581,912.04 and 230,678.85

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Solution

The fourth proportional to 421,665.46, 581,912.04 and 230,678.85 is: 318,344.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,665.46 : 581,912.04 = 230,678.85 : x
  2. Step 2: Convert to fraction form
    421,665.46/581,912.04 = 230,678.85/x
  3. Step 3: Cross multiply
    421,665.46x = 581,912.04 × 230,678.85
  4. Step 4: Simplify right side
    421,665.46x = 134,234,800,188.35
  5. Step 5: Solve for x
    x = 134,234,800,188.35/421,665.46
  6. Step 6: Final answer
    x = 318,344.31

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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.