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Finding the Fourth Proportional to 208,679.34, 287,977.52 and 118,033.36

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Solution

The fourth proportional to 208,679.34, 287,977.52 and 118,033.36 is: 162,886.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,679.34 : 287,977.52 = 118,033.36 : x
  2. Step 2: Convert to fraction form
    208,679.34/287,977.52 = 118,033.36/x
  3. Step 3: Cross multiply
    208,679.34x = 287,977.52 × 118,033.36
  4. Step 4: Simplify right side
    208,679.34x = 33,990,953,865.21
  5. Step 5: Solve for x
    x = 33,990,953,865.21/208,679.34
  6. Step 6: Final answer
    x = 162,886.05

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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.