Home / 352,427.59-528,636.80-86,190.41

Finding the Fourth Proportional to 352,427.59, 528,636.80 and 86,190.41

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Solution

The fourth proportional to 352,427.59, 528,636.80 and 86,190.41 is: 129,284.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,427.59 : 528,636.80 = 86,190.41 : x
  2. Step 2: Convert to fraction form
    352,427.59/528,636.80 = 86,190.41/x
  3. Step 3: Cross multiply
    352,427.59x = 528,636.80 × 86,190.41
  4. Step 4: Simplify right side
    352,427.59x = 45,563,422,533.09
  5. Step 5: Solve for x
    x = 45,563,422,533.09/352,427.59
  6. Step 6: Final answer
    x = 129,284.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.