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Finding the Fourth Proportional to 208,053.38, 287,152.60 and 118,629.38

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Solution

The fourth proportional to 208,053.38, 287,152.60 and 118,629.38 is: 163,730.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,053.38 : 287,152.60 = 118,629.38 : x
  2. Step 2: Convert to fraction form
    208,053.38/287,152.60 = 118,629.38/x
  3. Step 3: Cross multiply
    208,053.38x = 287,152.60 × 118,629.38
  4. Step 4: Simplify right side
    208,053.38x = 34,064,733,171.05
  5. Step 5: Solve for x
    x = 34,064,733,171.05/208,053.38
  6. Step 6: Final answer
    x = 163,730.74

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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.