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Finding the Fourth Proportional to 201,755.63, 278,449.50 and 130,343.40

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Solution

The fourth proportional to 201,755.63, 278,449.50 and 130,343.40 is: 179,891.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,755.63 : 278,449.50 = 130,343.40 : x
  2. Step 2: Convert to fraction form
    201,755.63/278,449.50 = 130,343.40/x
  3. Step 3: Cross multiply
    201,755.63x = 278,449.50 × 130,343.40
  4. Step 4: Simplify right side
    201,755.63x = 36,294,054,558.30
  5. Step 5: Solve for x
    x = 36,294,054,558.30/201,755.63
  6. Step 6: Final answer
    x = 179,891.17

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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.