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Finding the Fourth Proportional to 207,980.44, 287,012.16 and 117,336.40

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Solution

The fourth proportional to 207,980.44, 287,012.16 and 117,336.40 is: 161,923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,980.44 : 287,012.16 = 117,336.40 : x
  2. Step 2: Convert to fraction form
    207,980.44/287,012.16 = 117,336.40/x
  3. Step 3: Cross multiply
    207,980.44x = 287,012.16 × 117,336.40
  4. Step 4: Simplify right side
    207,980.44x = 33,676,973,610.62
  5. Step 5: Solve for x
    x = 33,676,973,610.62/207,980.44
  6. Step 6: Final answer
    x = 161,923.75

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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.