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Finding the Fourth Proportional to 257,656.62, 355,386.24 and 248,986.38

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Solution

The fourth proportional to 257,656.62, 355,386.24 and 248,986.38 is: 343,427.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,656.62 : 355,386.24 = 248,986.38 : x
  2. Step 2: Convert to fraction form
    257,656.62/355,386.24 = 248,986.38/x
  3. Step 3: Cross multiply
    257,656.62x = 355,386.24 × 248,986.38
  4. Step 4: Simplify right side
    257,656.62x = 88,486,333,399.41
  5. Step 5: Solve for x
    x = 88,486,333,399.41/257,656.62
  6. Step 6: Final answer
    x = 343,427.36

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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.