Home / 283,453.78-391,166.18-156,129.38

Finding the Fourth Proportional to 283,453.78, 391,166.18 and 156,129.38

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Solution

The fourth proportional to 283,453.78, 391,166.18 and 156,129.38 is: 215,458.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,453.78 : 391,166.18 = 156,129.38 : x
  2. Step 2: Convert to fraction form
    283,453.78/391,166.18 = 156,129.38/x
  3. Step 3: Cross multiply
    283,453.78x = 391,166.18 × 156,129.38
  4. Step 4: Simplify right side
    283,453.78x = 61,072,533,160.37
  5. Step 5: Solve for x
    x = 61,072,533,160.37/283,453.78
  6. Step 6: Final answer
    x = 215,458.52

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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.