Home / 211,004.11-291,190.80-115,510.51

Finding the Fourth Proportional to 211,004.11, 291,190.80 and 115,510.51

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Solution

The fourth proportional to 211,004.11, 291,190.80 and 115,510.51 is: 159,407.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,004.11 : 291,190.80 = 115,510.51 : x
  2. Step 2: Convert to fraction form
    211,004.11/291,190.80 = 115,510.51/x
  3. Step 3: Cross multiply
    211,004.11x = 291,190.80 × 115,510.51
  4. Step 4: Simplify right side
    211,004.11x = 33,635,597,815.31
  5. Step 5: Solve for x
    x = 33,635,597,815.31/211,004.11
  6. Step 6: Final answer
    x = 159,407.31

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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.