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Finding the Fourth Proportional to 281,245.36, 421,900.77 and 98,820.10

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Solution

The fourth proportional to 281,245.36, 421,900.77 and 98,820.10 is: 148,241.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,245.36 : 421,900.77 = 98,820.10 : x
  2. Step 2: Convert to fraction form
    281,245.36/421,900.77 = 98,820.10/x
  3. Step 3: Cross multiply
    281,245.36x = 421,900.77 × 98,820.10
  4. Step 4: Simplify right side
    281,245.36x = 41,692,276,281.48
  5. Step 5: Solve for x
    x = 41,692,276,281.48/281,245.36
  6. Step 6: Final answer
    x = 148,241.65

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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.