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Finding the Fourth Proportional to 358,960.86, 495,369.26 and 197,821.66

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Solution

The fourth proportional to 358,960.86, 495,369.26 and 197,821.66 is: 272,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,960.86 : 495,369.26 = 197,821.66 : x
  2. Step 2: Convert to fraction form
    358,960.86/495,369.26 = 197,821.66/x
  3. Step 3: Cross multiply
    358,960.86x = 495,369.26 × 197,821.66
  4. Step 4: Simplify right side
    358,960.86x = 97,994,769,326.17
  5. Step 5: Solve for x
    x = 97,994,769,326.17/358,960.86
  6. Step 6: Final answer
    x = 272,995.69

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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.