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Finding the Fourth Proportional to 207,980.27, 287,012.70 and 112,486.94

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Solution

The fourth proportional to 207,980.27, 287,012.70 and 112,486.94 is: 155,231.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,980.27 : 287,012.70 = 112,486.94 : x
  2. Step 2: Convert to fraction form
    207,980.27/287,012.70 = 112,486.94/x
  3. Step 3: Cross multiply
    207,980.27x = 287,012.70 × 112,486.94
  4. Step 4: Simplify right side
    207,980.27x = 32,285,180,005.37
  5. Step 5: Solve for x
    x = 32,285,180,005.37/207,980.27
  6. Step 6: Final answer
    x = 155,231.94

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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.