Home / 405,244.89-559,250.81-221,479.43

Finding the Fourth Proportional to 405,244.89, 559,250.81 and 221,479.43

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Solution

The fourth proportional to 405,244.89, 559,250.81 and 221,479.43 is: 305,648.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,244.89 : 559,250.81 = 221,479.43 : x
  2. Step 2: Convert to fraction form
    405,244.89/559,250.81 = 221,479.43/x
  3. Step 3: Cross multiply
    405,244.89x = 559,250.81 × 221,479.43
  4. Step 4: Simplify right side
    405,244.89x = 123,862,550,625.84
  5. Step 5: Solve for x
    x = 123,862,550,625.84/405,244.89
  6. Step 6: Final answer
    x = 305,648.64

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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.