Home / 281,109.20-421,663.80-268,667.60

Finding the Fourth Proportional to 281,109.20, 421,663.80 and 268,667.60

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Solution

The fourth proportional to 281,109.20, 421,663.80 and 268,667.60 is: 403,001.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,109.20 : 421,663.80 = 268,667.60 : x
  2. Step 2: Convert to fraction form
    281,109.20/421,663.80 = 268,667.60/x
  3. Step 3: Cross multiply
    281,109.20x = 421,663.80 × 268,667.60
  4. Step 4: Simplify right side
    281,109.20x = 113,287,401,152.88
  5. Step 5: Solve for x
    x = 113,287,401,152.88/281,109.20
  6. Step 6: Final answer
    x = 403,001.40

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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.