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Finding the Fourth Proportional to 358,934, 495,328.92 and 208,118.48

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Solution

The fourth proportional to 358,934, 495,328.92 and 208,118.48 is: 287,203.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,934 : 495,328.92 = 208,118.48 : x
  2. Step 2: Convert to fraction form
    358,934/495,328.92 = 208,118.48/x
  3. Step 3: Cross multiply
    358,934x = 495,328.92 × 208,118.48
  4. Step 4: Simplify right side
    358,934x = 103,087,101,930.44
  5. Step 5: Solve for x
    x = 103,087,101,930.44/358,934
  6. Step 6: Final answer
    x = 287,203.50

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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.