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Finding the Fourth Proportional to 208,116.14, 287,200.28 and 112,622.84

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Solution

The fourth proportional to 208,116.14, 287,200.28 and 112,622.84 is: 155,419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,116.14 : 287,200.28 = 112,622.84 : x
  2. Step 2: Convert to fraction form
    208,116.14/287,200.28 = 112,622.84/x
  3. Step 3: Cross multiply
    208,116.14x = 287,200.28 × 112,622.84
  4. Step 4: Simplify right side
    208,116.14x = 32,345,311,182.40
  5. Step 5: Solve for x
    x = 32,345,311,182.40/208,116.14
  6. Step 6: Final answer
    x = 155,419.52

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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.