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Finding the Fourth Proportional to 487,978.78, 673,257.27 and 273,084.70

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Solution

The fourth proportional to 487,978.78, 673,257.27 and 273,084.70 is: 376,771.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,978.78 : 673,257.27 = 273,084.70 : x
  2. Step 2: Convert to fraction form
    487,978.78/673,257.27 = 273,084.70/x
  3. Step 3: Cross multiply
    487,978.78x = 673,257.27 × 273,084.70
  4. Step 4: Simplify right side
    487,978.78x = 183,856,259,600.77
  5. Step 5: Solve for x
    x = 183,856,259,600.77/487,978.78
  6. Step 6: Final answer
    x = 376,771.01

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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.