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Finding the Fourth Proportional to 208,670.67, 287,979.84 and 118,026.72

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Solution

The fourth proportional to 208,670.67, 287,979.84 and 118,026.72 is: 162,884.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,670.67 : 287,979.84 = 118,026.72 : x
  2. Step 2: Convert to fraction form
    208,670.67/287,979.84 = 118,026.72/x
  3. Step 3: Cross multiply
    208,670.67x = 287,979.84 × 118,026.72
  4. Step 4: Simplify right side
    208,670.67x = 33,989,315,941.32
  5. Step 5: Solve for x
    x = 33,989,315,941.32/208,670.67
  6. Step 6: Final answer
    x = 162,884.97

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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.