Home / 286,914.68-430,396.10-87,236.79

Finding the Fourth Proportional to 286,914.68, 430,396.10 and 87,236.79

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Solution

The fourth proportional to 286,914.68, 430,396.10 and 87,236.79 is: 130,862.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,914.68 : 430,396.10 = 87,236.79 : x
  2. Step 2: Convert to fraction form
    286,914.68/430,396.10 = 87,236.79/x
  3. Step 3: Cross multiply
    286,914.68x = 430,396.10 × 87,236.79
  4. Step 4: Simplify right side
    286,914.68x = 37,546,374,192.52
  5. Step 5: Solve for x
    x = 37,546,374,192.52/286,914.68
  6. Step 6: Final answer
    x = 130,862.51

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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.