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Finding the Fourth Proportional to 257,900.96, 355,801.68 and 148,933.28

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Solution

The fourth proportional to 257,900.96, 355,801.68 and 148,933.28 is: 205,469.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,900.96 : 355,801.68 = 148,933.28 : x
  2. Step 2: Convert to fraction form
    257,900.96/355,801.68 = 148,933.28/x
  3. Step 3: Cross multiply
    257,900.96x = 355,801.68 × 148,933.28
  4. Step 4: Simplify right side
    257,900.96x = 52,990,711,231.91
  5. Step 5: Solve for x
    x = 52,990,711,231.91/257,900.96
  6. Step 6: Final answer
    x = 205,469.23

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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.