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Finding the Fourth Proportional to 281,045.16, 421,568.28 and 70,683.30

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Solution

The fourth proportional to 281,045.16, 421,568.28 and 70,683.30 is: 106,025.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,045.16 : 421,568.28 = 70,683.30 : x
  2. Step 2: Convert to fraction form
    281,045.16/421,568.28 = 70,683.30/x
  3. Step 3: Cross multiply
    281,045.16x = 421,568.28 × 70,683.30
  4. Step 4: Simplify right side
    281,045.16x = 29,797,837,205.72
  5. Step 5: Solve for x
    x = 29,797,837,205.72/281,045.16
  6. Step 6: Final answer
    x = 106,025.09

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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.