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Finding the Fourth Proportional to 208,673.30, 287,650.74 and 127,951.16

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Solution

The fourth proportional to 208,673.30, 287,650.74 and 127,951.16 is: 176,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,673.30 : 287,650.74 = 127,951.16 : x
  2. Step 2: Convert to fraction form
    208,673.30/287,650.74 = 127,951.16/x
  3. Step 3: Cross multiply
    208,673.30x = 287,650.74 × 127,951.16
  4. Step 4: Simplify right side
    208,673.30x = 36,805,245,857.86
  5. Step 5: Solve for x
    x = 36,805,245,857.86/208,673.30
  6. Step 6: Final answer
    x = 176,377.36

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1.5x scale

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.