Home / 285,230.34-393,602.25-156,143.85

Finding the Fourth Proportional to 285,230.34, 393,602.25 and 156,143.85

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Solution

The fourth proportional to 285,230.34, 393,602.25 and 156,143.85 is: 215,469.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,230.34 : 393,602.25 = 156,143.85 : x
  2. Step 2: Convert to fraction form
    285,230.34/393,602.25 = 156,143.85/x
  3. Step 3: Cross multiply
    285,230.34x = 393,602.25 × 156,143.85
  4. Step 4: Simplify right side
    285,230.34x = 61,458,570,683.66
  5. Step 5: Solve for x
    x = 61,458,570,683.66/285,230.34
  6. Step 6: Final answer
    x = 215,469.96

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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.