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Finding the Fourth Proportional to 257,862.32, 355,846.87 and 143,141.87

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Solution

The fourth proportional to 257,862.32, 355,846.87 and 143,141.87 is: 197,534.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,862.32 : 355,846.87 = 143,141.87 : x
  2. Step 2: Convert to fraction form
    257,862.32/355,846.87 = 143,141.87/x
  3. Step 3: Cross multiply
    257,862.32x = 355,846.87 × 143,141.87
  4. Step 4: Simplify right side
    257,862.32x = 50,936,585,472.35
  5. Step 5: Solve for x
    x = 50,936,585,472.35/257,862.32
  6. Step 6: Final answer
    x = 197,534.04

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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.