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Finding the Fourth Proportional to 210,528.76, 290,529.39 and 119,884.75

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Solution

The fourth proportional to 210,528.76, 290,529.39 and 119,884.75 is: 165,440.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,528.76 : 290,529.39 = 119,884.75 : x
  2. Step 2: Convert to fraction form
    210,528.76/290,529.39 = 119,884.75/x
  3. Step 3: Cross multiply
    210,528.76x = 290,529.39 × 119,884.75
  4. Step 4: Simplify right side
    210,528.76x = 34,830,043,287.80
  5. Step 5: Solve for x
    x = 34,830,043,287.80/210,528.76
  6. Step 6: Final answer
    x = 165,440.78

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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.