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Finding the Fourth Proportional to 208,590.66, 287,749.13 and 131,980.59

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Solution

The fourth proportional to 208,590.66, 287,749.13 and 131,980.59 is: 182,066.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,590.66 : 287,749.13 = 131,980.59 : x
  2. Step 2: Convert to fraction form
    208,590.66/287,749.13 = 131,980.59/x
  3. Step 3: Cross multiply
    208,590.66x = 287,749.13 × 131,980.59
  4. Step 4: Simplify right side
    208,590.66x = 37,977,299,289.48
  5. Step 5: Solve for x
    x = 37,977,299,289.48/208,590.66
  6. Step 6: Final answer
    x = 182,066.15

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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.