Home / 281,256.96-421,884.80-70,911.36

Finding the Fourth Proportional to 281,256.96, 421,884.80 and 70,911.36

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Solution

The fourth proportional to 281,256.96, 421,884.80 and 70,911.36 is: 106,366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,256.96 : 421,884.80 = 70,911.36 : x
  2. Step 2: Convert to fraction form
    281,256.96/421,884.80 = 70,911.36/x
  3. Step 3: Cross multiply
    281,256.96x = 421,884.80 × 70,911.36
  4. Step 4: Simplify right side
    281,256.96x = 29,916,424,931.33
  5. Step 5: Solve for x
    x = 29,916,424,931.33/281,256.96
  6. Step 6: Final answer
    x = 106,366.88

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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.