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Finding the Fourth Proportional to 281,014.60, 421,324.80 and 103,498.60

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Solution

The fourth proportional to 281,014.60, 421,324.80 and 103,498.60 is: 155,175.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,014.60 : 421,324.80 = 103,498.60 : x
  2. Step 2: Convert to fraction form
    281,014.60/421,324.80 = 103,498.60/x
  3. Step 3: Cross multiply
    281,014.60x = 421,324.80 × 103,498.60
  4. Step 4: Simplify right side
    281,014.60x = 43,606,526,945.28
  5. Step 5: Solve for x
    x = 43,606,526,945.28/281,014.60
  6. Step 6: Final answer
    x = 155,175.31

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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.