Home / 426,257.37-639,399.78-223,802.19

Finding the Fourth Proportional to 426,257.37, 639,399.78 and 223,802.19

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Solution

The fourth proportional to 426,257.37, 639,399.78 and 223,802.19 is: 335,710.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,257.37 : 639,399.78 = 223,802.19 : x
  2. Step 2: Convert to fraction form
    426,257.37/639,399.78 = 223,802.19/x
  3. Step 3: Cross multiply
    426,257.37x = 639,399.78 × 223,802.19
  4. Step 4: Simplify right side
    426,257.37x = 143,099,071,049.52
  5. Step 5: Solve for x
    x = 143,099,071,049.52/426,257.37
  6. Step 6: Final answer
    x = 335,710.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.