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Finding the Fourth Proportional to 255,487.17, 383,394.78 and 171,342.35

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Solution

The fourth proportional to 255,487.17, 383,394.78 and 171,342.35 is: 257,123.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,487.17 : 383,394.78 = 171,342.35 : x
  2. Step 2: Convert to fraction form
    255,487.17/383,394.78 = 171,342.35/x
  3. Step 3: Cross multiply
    255,487.17x = 383,394.78 × 171,342.35
  4. Step 4: Simplify right side
    255,487.17x = 65,691,762,582.93
  5. Step 5: Solve for x
    x = 65,691,762,582.93/255,487.17
  6. Step 6: Final answer
    x = 257,123.53

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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.