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Finding the Fourth Proportional to 281,004.17, 421,727.67 and 103,635.72

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Solution

The fourth proportional to 281,004.17, 421,727.67 and 103,635.72 is: 155,535.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,004.17 : 421,727.67 = 103,635.72 : x
  2. Step 2: Convert to fraction form
    281,004.17/421,727.67 = 103,635.72/x
  3. Step 3: Cross multiply
    281,004.17x = 421,727.67 × 103,635.72
  4. Step 4: Simplify right side
    281,004.17x = 43,706,050,724.37
  5. Step 5: Solve for x
    x = 43,706,050,724.37/281,004.17
  6. Step 6: Final answer
    x = 155,535.24

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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.