Home / 395,271.45-545,470.07-213,979.39

Finding the Fourth Proportional to 395,271.45, 545,470.07 and 213,979.39

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Solution

The fourth proportional to 395,271.45, 545,470.07 and 213,979.39 is: 295,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,271.45 : 545,470.07 = 213,979.39 : x
  2. Step 2: Convert to fraction form
    395,271.45/545,470.07 = 213,979.39/x
  3. Step 3: Cross multiply
    395,271.45x = 545,470.07 × 213,979.39
  4. Step 4: Simplify right side
    395,271.45x = 116,719,350,408.29
  5. Step 5: Solve for x
    x = 116,719,350,408.29/395,271.45
  6. Step 6: Final answer
    x = 295,289.10

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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.