Home / 285,221.15-393,609.84-156,157.46

Finding the Fourth Proportional to 285,221.15, 393,609.84 and 156,157.46

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Solution

The fourth proportional to 285,221.15, 393,609.84 and 156,157.46 is: 215,499.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,221.15 : 393,609.84 = 156,157.46 : x
  2. Step 2: Convert to fraction form
    285,221.15/393,609.84 = 156,157.46/x
  3. Step 3: Cross multiply
    285,221.15x = 393,609.84 × 156,157.46
  4. Step 4: Simplify right side
    285,221.15x = 61,465,112,845.41
  5. Step 5: Solve for x
    x = 61,465,112,845.41/285,221.15
  6. Step 6: Final answer
    x = 215,499.84

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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.