Home / 283,640.69-391,424.14-156,316.28

Finding the Fourth Proportional to 283,640.69, 391,424.14 and 156,316.28

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Solution

The fourth proportional to 283,640.69, 391,424.14 and 156,316.28 is: 215,716.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,640.69 : 391,424.14 = 156,316.28 : x
  2. Step 2: Convert to fraction form
    283,640.69/391,424.14 = 156,316.28/x
  3. Step 3: Cross multiply
    283,640.69x = 391,424.14 × 156,316.28
  4. Step 4: Simplify right side
    283,640.69x = 61,185,965,467.00
  5. Step 5: Solve for x
    x = 61,185,965,467.00/283,640.69
  6. Step 6: Final answer
    x = 215,716.46

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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.