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Finding the Fourth Proportional to 257,707.50, 355,675.23 and 157,163.82

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Solution

The fourth proportional to 257,707.50, 355,675.23 and 157,163.82 is: 216,909.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,707.50 : 355,675.23 = 157,163.82 : x
  2. Step 2: Convert to fraction form
    257,707.50/355,675.23 = 157,163.82/x
  3. Step 3: Cross multiply
    257,707.50x = 355,675.23 × 157,163.82
  4. Step 4: Simplify right side
    257,707.50x = 55,899,277,826.18
  5. Step 5: Solve for x
    x = 55,899,277,826.18/257,707.50
  6. Step 6: Final answer
    x = 216,909.78

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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.