Home / 210,908.12-291,046.14-115,408.40

Finding the Fourth Proportional to 210,908.12, 291,046.14 and 115,408.40

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Solution

The fourth proportional to 210,908.12, 291,046.14 and 115,408.40 is: 159,259.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,908.12 : 291,046.14 = 115,408.40 : x
  2. Step 2: Convert to fraction form
    210,908.12/291,046.14 = 115,408.40/x
  3. Step 3: Cross multiply
    210,908.12x = 291,046.14 × 115,408.40
  4. Step 4: Simplify right side
    210,908.12x = 33,589,169,343.58
  5. Step 5: Solve for x
    x = 33,589,169,343.58/210,908.12
  6. Step 6: Final answer
    x = 159,259.73

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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.