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Finding the Fourth Proportional to 208,556.70, 287,807.67 and 113,063.10

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Solution

The fourth proportional to 208,556.70, 287,807.67 and 113,063.10 is: 156,026.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,556.70 : 287,807.67 = 113,063.10 : x
  2. Step 2: Convert to fraction form
    208,556.70/287,807.67 = 113,063.10/x
  3. Step 3: Cross multiply
    208,556.70x = 287,807.67 × 113,063.10
  4. Step 4: Simplify right side
    208,556.70x = 32,540,427,373.98
  5. Step 5: Solve for x
    x = 32,540,427,373.98/208,556.70
  6. Step 6: Final answer
    x = 156,026.77

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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.