Home / 257,968.72-355,986.56-143,253.28

Finding the Fourth Proportional to 257,968.72, 355,986.56 and 143,253.28

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Solution

The fourth proportional to 257,968.72, 355,986.56 and 143,253.28 is: 197,683.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,968.72 : 355,986.56 = 143,253.28 : x
  2. Step 2: Convert to fraction form
    257,968.72/355,986.56 = 143,253.28/x
  3. Step 3: Cross multiply
    257,968.72x = 355,986.56 × 143,253.28
  4. Step 4: Simplify right side
    257,968.72x = 50,996,242,355.92
  5. Step 5: Solve for x
    x = 50,996,242,355.92/257,968.72
  6. Step 6: Final answer
    x = 197,683.82

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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.