Home / 285,575.12-394,088.94-156,512.60

Finding the Fourth Proportional to 285,575.12, 394,088.94 and 156,512.60

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Solution

The fourth proportional to 285,575.12, 394,088.94 and 156,512.60 is: 215,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,575.12 : 394,088.94 = 156,512.60 : x
  2. Step 2: Convert to fraction form
    285,575.12/394,088.94 = 156,512.60/x
  3. Step 3: Cross multiply
    285,575.12x = 394,088.94 × 156,512.60
  4. Step 4: Simplify right side
    285,575.12x = 61,679,884,630.64
  5. Step 5: Solve for x
    x = 61,679,884,630.64/285,575.12
  6. Step 6: Final answer
    x = 215,984.80

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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.