Home / 345,826.66-518,785.38-135,437.26

Finding the Fourth Proportional to 345,826.66, 518,785.38 and 135,437.26

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Solution

The fourth proportional to 345,826.66, 518,785.38 and 135,437.26 is: 203,173.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,826.66 : 518,785.38 = 135,437.26 : x
  2. Step 2: Convert to fraction form
    345,826.66/518,785.38 = 135,437.26/x
  3. Step 3: Cross multiply
    345,826.66x = 518,785.38 × 135,437.26
  4. Step 4: Simplify right side
    345,826.66x = 70,262,870,395.26
  5. Step 5: Solve for x
    x = 70,262,870,395.26/345,826.66
  6. Step 6: Final answer
    x = 203,173.67

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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.