Home / 210,905.13-291,049.08-115,411.86

Finding the Fourth Proportional to 210,905.13, 291,049.08 and 115,411.86

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Solution

The fourth proportional to 210,905.13, 291,049.08 and 115,411.86 is: 159,268.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,905.13 : 291,049.08 = 115,411.86 : x
  2. Step 2: Convert to fraction form
    210,905.13/291,049.08 = 115,411.86/x
  3. Step 3: Cross multiply
    210,905.13x = 291,049.08 × 115,411.86
  4. Step 4: Simplify right side
    210,905.13x = 33,590,515,674.09
  5. Step 5: Solve for x
    x = 33,590,515,674.09/210,905.13
  6. Step 6: Final answer
    x = 159,268.37

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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.