Home / 283,605.12-391,383.39-156,288.90

Finding the Fourth Proportional to 283,605.12, 391,383.39 and 156,288.90

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Solution

The fourth proportional to 283,605.12, 391,383.39 and 156,288.90 is: 215,683.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,605.12 : 391,383.39 = 156,288.90 : x
  2. Step 2: Convert to fraction form
    283,605.12/391,383.39 = 156,288.90/x
  3. Step 3: Cross multiply
    283,605.12x = 391,383.39 × 156,288.90
  4. Step 4: Simplify right side
    283,605.12x = 61,168,879,501.37
  5. Step 5: Solve for x
    x = 61,168,879,501.37/283,605.12
  6. Step 6: Final answer
    x = 215,683.27

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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.