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Finding the Fourth Proportional to 208,620.63, 287,892.90 and 117,973.53

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Solution

The fourth proportional to 208,620.63, 287,892.90 and 117,973.53 is: 162,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,620.63 : 287,892.90 = 117,973.53 : x
  2. Step 2: Convert to fraction form
    208,620.63/287,892.90 = 117,973.53/x
  3. Step 3: Cross multiply
    208,620.63x = 287,892.90 × 117,973.53
  4. Step 4: Simplify right side
    208,620.63x = 33,963,741,674.94
  5. Step 5: Solve for x
    x = 33,963,741,674.94/208,620.63
  6. Step 6: Final answer
    x = 162,801.45

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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.