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Finding the Fourth Proportional to 281,077.80, 421,470.90 and 103,493.40

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Solution

The fourth proportional to 281,077.80, 421,470.90 and 103,493.40 is: 155,186.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,077.80 : 421,470.90 = 103,493.40 : x
  2. Step 2: Convert to fraction form
    281,077.80/421,470.90 = 103,493.40/x
  3. Step 3: Cross multiply
    281,077.80x = 421,470.90 × 103,493.40
  4. Step 4: Simplify right side
    281,077.80x = 43,619,456,442.06
  5. Step 5: Solve for x
    x = 43,619,456,442.06/281,077.80
  6. Step 6: Final answer
    x = 155,186.42

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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.