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Finding the Fourth Proportional to 208,705.64, 288,013.88 and 118,059.70

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Solution

The fourth proportional to 208,705.64, 288,013.88 and 118,059.70 is: 162,922.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,705.64 : 288,013.88 = 118,059.70 : x
  2. Step 2: Convert to fraction form
    208,705.64/288,013.88 = 118,059.70/x
  3. Step 3: Cross multiply
    208,705.64x = 288,013.88 × 118,059.70
  4. Step 4: Simplify right side
    208,705.64x = 34,002,832,529.73
  5. Step 5: Solve for x
    x = 34,002,832,529.73/208,705.64
  6. Step 6: Final answer
    x = 162,922.44

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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.