Home / 285,729.40-394,311.36-156,665.20

Finding the Fourth Proportional to 285,729.40, 394,311.36 and 156,665.20

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Solution

The fourth proportional to 285,729.40, 394,311.36 and 156,665.20 is: 216,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,729.40 : 394,311.36 = 156,665.20 : x
  2. Step 2: Convert to fraction form
    285,729.40/394,311.36 = 156,665.20/x
  3. Step 3: Cross multiply
    285,729.40x = 394,311.36 × 156,665.20
  4. Step 4: Simplify right side
    285,729.40x = 61,774,868,076.67
  5. Step 5: Solve for x
    x = 61,774,868,076.67/285,729.40
  6. Step 6: Final answer
    x = 216,200.60

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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.