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Finding the Fourth Proportional to 208,690.57, 287,992.98 and 118,044.58

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Solution

The fourth proportional to 208,690.57, 287,992.98 and 118,044.58 is: 162,901.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,690.57 : 287,992.98 = 118,044.58 : x
  2. Step 2: Convert to fraction form
    208,690.57/287,992.98 = 118,044.58/x
  3. Step 3: Cross multiply
    208,690.57x = 287,992.98 × 118,044.58
  4. Step 4: Simplify right side
    208,690.57x = 33,996,010,367.05
  5. Step 5: Solve for x
    x = 33,996,010,367.05/208,690.57
  6. Step 6: Final answer
    x = 162,901.52

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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.