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Finding the Fourth Proportional to 358,978.06, 495,393.11 and 197,838.91

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Solution

The fourth proportional to 358,978.06, 495,393.11 and 197,838.91 is: 273,019.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,978.06 : 495,393.11 = 197,838.91 : x
  2. Step 2: Convert to fraction form
    358,978.06/495,393.11 = 197,838.91/x
  3. Step 3: Cross multiply
    358,978.06x = 495,393.11 × 197,838.91
  4. Step 4: Simplify right side
    358,978.06x = 98,008,031,914.72
  5. Step 5: Solve for x
    x = 98,008,031,914.72/358,978.06
  6. Step 6: Final answer
    x = 273,019.56

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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.