Home / 220,719.40-330,848.70-120,725.80

Finding the Fourth Proportional to 220,719.40, 330,848.70 and 120,725.80

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Solution

The fourth proportional to 220,719.40, 330,848.70 and 120,725.80 is: 180,962.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,719.40 : 330,848.70 = 120,725.80 : x
  2. Step 2: Convert to fraction form
    220,719.40/330,848.70 = 120,725.80/x
  3. Step 3: Cross multiply
    220,719.40x = 330,848.70 × 120,725.80
  4. Step 4: Simplify right side
    220,719.40x = 39,941,973,986.46
  5. Step 5: Solve for x
    x = 39,941,973,986.46/220,719.40
  6. Step 6: Final answer
    x = 180,962.68

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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.