Home / 210,779.45-290,882.60-115,286.15

Finding the Fourth Proportional to 210,779.45, 290,882.60 and 115,286.15

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Solution

The fourth proportional to 210,779.45, 290,882.60 and 115,286.15 is: 159,098.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,779.45 : 290,882.60 = 115,286.15 : x
  2. Step 2: Convert to fraction form
    210,779.45/290,882.60 = 115,286.15/x
  3. Step 3: Cross multiply
    210,779.45x = 290,882.60 × 115,286.15
  4. Step 4: Simplify right side
    210,779.45x = 33,534,735,055.99
  5. Step 5: Solve for x
    x = 33,534,735,055.99/210,779.45
  6. Step 6: Final answer
    x = 159,098.69

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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.