Home / 393,076.80-589,226.40-156,103.20

Finding the Fourth Proportional to 393,076.80, 589,226.40 and 156,103.20

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Solution

The fourth proportional to 393,076.80, 589,226.40 and 156,103.20 is: 234,000.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,076.80 : 589,226.40 = 156,103.20 : x
  2. Step 2: Convert to fraction form
    393,076.80/589,226.40 = 156,103.20/x
  3. Step 3: Cross multiply
    393,076.80x = 589,226.40 × 156,103.20
  4. Step 4: Simplify right side
    393,076.80x = 91,980,126,564.48
  5. Step 5: Solve for x
    x = 91,980,126,564.48/393,076.80
  6. Step 6: Final answer
    x = 234,000.40

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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.