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Finding the Fourth Proportional to 208,396.64, 287,587.67 and 112,903.34

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Solution

The fourth proportional to 208,396.64, 287,587.67 and 112,903.34 is: 155,806.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,396.64 : 287,587.67 = 112,903.34 : x
  2. Step 2: Convert to fraction form
    208,396.64/287,587.67 = 112,903.34/x
  3. Step 3: Cross multiply
    208,396.64x = 287,587.67 × 112,903.34
  4. Step 4: Simplify right side
    208,396.64x = 32,469,606,483.36
  5. Step 5: Solve for x
    x = 32,469,606,483.36/208,396.64
  6. Step 6: Final answer
    x = 155,806.76

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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.