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Finding the Fourth Proportional to 257,655.12, 355,384.17 and 248,984.88

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Solution

The fourth proportional to 257,655.12, 355,384.17 and 248,984.88 is: 343,425.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,655.12 : 355,384.17 = 248,984.88 : x
  2. Step 2: Convert to fraction form
    257,655.12/355,384.17 = 248,984.88/x
  3. Step 3: Cross multiply
    257,655.12x = 355,384.17 × 248,984.88
  4. Step 4: Simplify right side
    257,655.12x = 88,485,284,921.35
  5. Step 5: Solve for x
    x = 88,485,284,921.35/257,655.12
  6. Step 6: Final answer
    x = 343,425.29

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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.