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Finding the Fourth Proportional to 421,370.92, 581,500.26 and 230,396.20

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Solution

The fourth proportional to 421,370.92, 581,500.26 and 230,396.20 is: 317,951.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,370.92 : 581,500.26 = 230,396.20 : x
  2. Step 2: Convert to fraction form
    421,370.92/581,500.26 = 230,396.20/x
  3. Step 3: Cross multiply
    421,370.92x = 581,500.26 × 230,396.20
  4. Step 4: Simplify right side
    421,370.92x = 133,975,450,203.01
  5. Step 5: Solve for x
    x = 133,975,450,203.01/421,370.92
  6. Step 6: Final answer
    x = 317,951.34

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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.