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Finding the Fourth Proportional to 358,851.72, 495,213 and 197,703

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Solution

The fourth proportional to 358,851.72, 495,213 and 197,703 is: 272,828.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,851.72 : 495,213 = 197,703 : x
  2. Step 2: Convert to fraction form
    358,851.72/495,213 = 197,703/x
  3. Step 3: Cross multiply
    358,851.72x = 495,213 × 197,703
  4. Step 4: Simplify right side
    358,851.72x = 97,905,095,739
  5. Step 5: Solve for x
    x = 97,905,095,739/358,851.72
  6. Step 6: Final answer
    x = 272,828.83

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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.