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Finding the Fourth Proportional to 208,219.58, 287,200.55 and 131,835.76

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Solution

The fourth proportional to 208,219.58, 287,200.55 and 131,835.76 is: 181,843.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,219.58 : 287,200.55 = 131,835.76 : x
  2. Step 2: Convert to fraction form
    208,219.58/287,200.55 = 131,835.76/x
  3. Step 3: Cross multiply
    208,219.58x = 287,200.55 × 131,835.76
  4. Step 4: Simplify right side
    208,219.58x = 37,863,302,781.67
  5. Step 5: Solve for x
    x = 37,863,302,781.67/208,219.58
  6. Step 6: Final answer
    x = 181,843.14

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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.