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Finding the Fourth Proportional to 398,129.89, 595,791.71 and 248,440.67

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Solution

The fourth proportional to 398,129.89, 595,791.71 and 248,440.67 is: 371,785.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,129.89 : 595,791.71 = 248,440.67 : x
  2. Step 2: Convert to fraction form
    398,129.89/595,791.71 = 248,440.67/x
  3. Step 3: Cross multiply
    398,129.89x = 595,791.71 × 248,440.67
  4. Step 4: Simplify right side
    398,129.89x = 148,018,890,370.64
  5. Step 5: Solve for x
    x = 148,018,890,370.64/398,129.89
  6. Step 6: Final answer
    x = 371,785.43

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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.