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Finding the Fourth Proportional to 208,216.03, 287,338.78 and 112,723.11

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Solution

The fourth proportional to 208,216.03, 287,338.78 and 112,723.11 is: 155,558.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,216.03 : 287,338.78 = 112,723.11 : x
  2. Step 2: Convert to fraction form
    208,216.03/287,338.78 = 112,723.11/x
  3. Step 3: Cross multiply
    208,216.03x = 287,338.78 × 112,723.11
  4. Step 4: Simplify right side
    208,216.03x = 32,389,720,905.21
  5. Step 5: Solve for x
    x = 32,389,720,905.21/208,216.03
  6. Step 6: Final answer
    x = 155,558.25

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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.