Home / 210,519.09-290,509.89-115,025.66

Finding the Fourth Proportional to 210,519.09, 290,509.89 and 115,025.66

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Solution

The fourth proportional to 210,519.09, 290,509.89 and 115,025.66 is: 158,731.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,519.09 : 290,509.89 = 115,025.66 : x
  2. Step 2: Convert to fraction form
    210,519.09/290,509.89 = 115,025.66/x
  3. Step 3: Cross multiply
    210,519.09x = 290,509.89 × 115,025.66
  4. Step 4: Simplify right side
    210,519.09x = 33,416,090,381.23
  5. Step 5: Solve for x
    x = 33,416,090,381.23/210,519.09
  6. Step 6: Final answer
    x = 158,731.88

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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.