Home / 281,333.76-421,987.68-103,829.28

Finding the Fourth Proportional to 281,333.76, 421,987.68 and 103,829.28

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Solution

The fourth proportional to 281,333.76, 421,987.68 and 103,829.28 is: 155,739.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,333.76 : 421,987.68 = 103,829.28 : x
  2. Step 2: Convert to fraction form
    281,333.76/421,987.68 = 103,829.28/x
  3. Step 3: Cross multiply
    281,333.76x = 421,987.68 × 103,829.28
  4. Step 4: Simplify right side
    281,333.76x = 43,814,676,983.27
  5. Step 5: Solve for x
    x = 43,814,676,983.27/281,333.76
  6. Step 6: Final answer
    x = 155,739.14

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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.