Home / 405,918.81-560,162.42-224,619.69

Finding the Fourth Proportional to 405,918.81, 560,162.42 and 224,619.69

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Solution

The fourth proportional to 405,918.81, 560,162.42 and 224,619.69 is: 309,972.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,918.81 : 560,162.42 = 224,619.69 : x
  2. Step 2: Convert to fraction form
    405,918.81/560,162.42 = 224,619.69/x
  3. Step 3: Cross multiply
    405,918.81x = 560,162.42 × 224,619.69
  4. Step 4: Simplify right side
    405,918.81x = 125,823,510,949.88
  5. Step 5: Solve for x
    x = 125,823,510,949.88/405,918.81
  6. Step 6: Final answer
    x = 309,972.11

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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.