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Finding the Fourth Proportional to 281,007.76, 421,080.72 and 190,935.76

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Solution

The fourth proportional to 281,007.76, 421,080.72 and 190,935.76 is: 286,110.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,007.76 : 421,080.72 = 190,935.76 : x
  2. Step 2: Convert to fraction form
    281,007.76/421,080.72 = 190,935.76/x
  3. Step 3: Cross multiply
    281,007.76x = 421,080.72 × 190,935.76
  4. Step 4: Simplify right side
    281,007.76x = 80,399,367,294.55
  5. Step 5: Solve for x
    x = 80,399,367,294.55/281,007.76
  6. Step 6: Final answer
    x = 286,110.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.