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Finding the Fourth Proportional to 208,369.63, 287,552.09 and 112,878.39

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Solution

The fourth proportional to 208,369.63, 287,552.09 and 112,878.39 is: 155,773.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,369.63 : 287,552.09 = 112,878.39 : x
  2. Step 2: Convert to fraction form
    208,369.63/287,552.09 = 112,878.39/x
  3. Step 3: Cross multiply
    208,369.63x = 287,552.09 × 112,878.39
  4. Step 4: Simplify right side
    208,369.63x = 32,458,416,395.94
  5. Step 5: Solve for x
    x = 32,458,416,395.94/208,369.63
  6. Step 6: Final answer
    x = 155,773.26

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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.