Home / 395,481.47-545,812.38-223,406.69

Finding the Fourth Proportional to 395,481.47, 545,812.38 and 223,406.69

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Solution

The fourth proportional to 395,481.47, 545,812.38 and 223,406.69 is: 308,328.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,481.47 : 545,812.38 = 223,406.69 : x
  2. Step 2: Convert to fraction form
    395,481.47/545,812.38 = 223,406.69/x
  3. Step 3: Cross multiply
    395,481.47x = 545,812.38 × 223,406.69
  4. Step 4: Simplify right side
    395,481.47x = 121,938,137,176.82
  5. Step 5: Solve for x
    x = 121,938,137,176.82/395,481.47
  6. Step 6: Final answer
    x = 308,328.32

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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.