Home / 286,271.76-431,418.27-257,844.41

Finding the Fourth Proportional to 286,271.76, 431,418.27 and 257,844.41

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Solution

The fourth proportional to 286,271.76, 431,418.27 and 257,844.41 is: 388,577.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,271.76 : 431,418.27 = 257,844.41 : x
  2. Step 2: Convert to fraction form
    286,271.76/431,418.27 = 257,844.41/x
  3. Step 3: Cross multiply
    286,271.76x = 431,418.27 × 257,844.41
  4. Step 4: Simplify right side
    286,271.76x = 111,238,787,134.28
  5. Step 5: Solve for x
    x = 111,238,787,134.28/286,271.76
  6. Step 6: Final answer
    x = 388,577.58

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.