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Finding the Fourth Proportional to 208,485.88, 287,708.42 and 116,604.20

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Solution

The fourth proportional to 208,485.88, 287,708.42 and 116,604.20 is: 160,912.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,485.88 : 287,708.42 = 116,604.20 : x
  2. Step 2: Convert to fraction form
    208,485.88/287,708.42 = 116,604.20/x
  3. Step 3: Cross multiply
    208,485.88x = 287,708.42 × 116,604.20
  4. Step 4: Simplify right side
    208,485.88x = 33,548,011,158.15
  5. Step 5: Solve for x
    x = 33,548,011,158.15/208,485.88
  6. Step 6: Final answer
    x = 160,912.63

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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.