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Finding the Fourth Proportional to 208,431.06, 287,640.22 and 127,903.08

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Solution

The fourth proportional to 208,431.06, 287,640.22 and 127,903.08 is: 176,509.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,431.06 : 287,640.22 = 127,903.08 : x
  2. Step 2: Convert to fraction form
    208,431.06/287,640.22 = 127,903.08/x
  3. Step 3: Cross multiply
    208,431.06x = 287,640.22 × 127,903.08
  4. Step 4: Simplify right side
    208,431.06x = 36,790,070,069.88
  5. Step 5: Solve for x
    x = 36,790,070,069.88/208,431.06
  6. Step 6: Final answer
    x = 176,509.54

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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.