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Finding the Fourth Proportional to 255,488.39, 383,396.61 and 171,343.56

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Solution

The fourth proportional to 255,488.39, 383,396.61 and 171,343.56 is: 257,125.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,488.39 : 383,396.61 = 171,343.56 : x
  2. Step 2: Convert to fraction form
    255,488.39/383,396.61 = 171,343.56/x
  3. Step 3: Cross multiply
    255,488.39x = 383,396.61 × 171,343.56
  4. Step 4: Simplify right side
    255,488.39x = 65,692,541,272.89
  5. Step 5: Solve for x
    x = 65,692,541,272.89/255,488.39
  6. Step 6: Final answer
    x = 257,125.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.