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Finding the Fourth Proportional to 257,898.99, 355,884.20 and 143,179.91

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Solution

The fourth proportional to 257,898.99, 355,884.20 and 143,179.91 is: 197,579.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,898.99 : 355,884.20 = 143,179.91 : x
  2. Step 2: Convert to fraction form
    257,898.99/355,884.20 = 143,179.91/x
  3. Step 3: Cross multiply
    257,898.99x = 355,884.20 × 143,179.91
  4. Step 4: Simplify right side
    257,898.99x = 50,955,465,231.10
  5. Step 5: Solve for x
    x = 50,955,465,231.10/257,898.99
  6. Step 6: Final answer
    x = 197,579.16

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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.