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Finding the Fourth Proportional to 208,376.22, 287,558.90 and 112,883.30

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Solution

The fourth proportional to 208,376.22, 287,558.90 and 112,883.30 is: 155,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,376.22 : 287,558.90 = 112,883.30 : x
  2. Step 2: Convert to fraction form
    208,376.22/287,558.90 = 112,883.30/x
  3. Step 3: Cross multiply
    208,376.22x = 287,558.90 × 112,883.30
  4. Step 4: Simplify right side
    208,376.22x = 32,460,597,576.37
  5. Step 5: Solve for x
    x = 32,460,597,576.37/208,376.22
  6. Step 6: Final answer
    x = 155,778.80

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1.5x scale

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.