Home / 281,165.40-388,011.06-153,846.36

Finding the Fourth Proportional to 281,165.40, 388,011.06 and 153,846.36

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Solution

The fourth proportional to 281,165.40, 388,011.06 and 153,846.36 is: 212,309.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,165.40 : 388,011.06 = 153,846.36 : x
  2. Step 2: Convert to fraction form
    281,165.40/388,011.06 = 153,846.36/x
  3. Step 3: Cross multiply
    281,165.40x = 388,011.06 × 153,846.36
  4. Step 4: Simplify right side
    281,165.40x = 59,694,089,220.74
  5. Step 5: Solve for x
    x = 59,694,089,220.74/281,165.40
  6. Step 6: Final answer
    x = 212,309.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.