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Finding the Fourth Proportional to 208,216.59, 287,338.98 and 112,723.28

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Solution

The fourth proportional to 208,216.59, 287,338.98 and 112,723.28 is: 155,558.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,216.59 : 287,338.98 = 112,723.28 : x
  2. Step 2: Convert to fraction form
    208,216.59/287,338.98 = 112,723.28/x
  3. Step 3: Cross multiply
    208,216.59x = 287,338.98 × 112,723.28
  4. Step 4: Simplify right side
    208,216.59x = 32,389,792,297.45
  5. Step 5: Solve for x
    x = 32,389,792,297.45/208,216.59
  6. Step 6: Final answer
    x = 155,558.17

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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.