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Finding the Fourth Proportional to 358,978.77, 495,393.98 and 197,839.67

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Solution

The fourth proportional to 358,978.77, 495,393.98 and 197,839.67 is: 273,020.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,978.77 : 495,393.98 = 197,839.67 : x
  2. Step 2: Convert to fraction form
    358,978.77/495,393.98 = 197,839.67/x
  3. Step 3: Cross multiply
    358,978.77x = 495,393.98 × 197,839.67
  4. Step 4: Simplify right side
    358,978.77x = 98,008,578,057.02
  5. Step 5: Solve for x
    x = 98,008,578,057.02/358,978.77
  6. Step 6: Final answer
    x = 273,020.54

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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.