Home / 210,918.09-291,067.38-115,430.85

Finding the Fourth Proportional to 210,918.09, 291,067.38 and 115,430.85

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Solution

The fourth proportional to 210,918.09, 291,067.38 and 115,430.85 is: 159,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,918.09 : 291,067.38 = 115,430.85 : x
  2. Step 2: Convert to fraction form
    210,918.09/291,067.38 = 115,430.85/x
  3. Step 3: Cross multiply
    210,918.09x = 291,067.38 × 115,430.85
  4. Step 4: Simplify right side
    210,918.09x = 33,598,155,080.67
  5. Step 5: Solve for x
    x = 33,598,155,080.67/210,918.09
  6. Step 6: Final answer
    x = 159,294.80

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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.