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Finding the Fourth Proportional to 281,062.76, 421,760.10 and 103,693.64

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Solution

The fourth proportional to 281,062.76, 421,760.10 and 103,693.64 is: 155,601.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,062.76 : 421,760.10 = 103,693.64 : x
  2. Step 2: Convert to fraction form
    281,062.76/421,760.10 = 103,693.64/x
  3. Step 3: Cross multiply
    281,062.76x = 421,760.10 × 103,693.64
  4. Step 4: Simplify right side
    281,062.76x = 43,733,839,975.76
  5. Step 5: Solve for x
    x = 43,733,839,975.76/281,062.76
  6. Step 6: Final answer
    x = 155,601.69

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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.