Home / 291,375.12-402,096.45-162,315.09

Finding the Fourth Proportional to 291,375.12, 402,096.45 and 162,315.09

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Solution

The fourth proportional to 291,375.12, 402,096.45 and 162,315.09 is: 223,994.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,375.12 : 402,096.45 = 162,315.09 : x
  2. Step 2: Convert to fraction form
    291,375.12/402,096.45 = 162,315.09/x
  3. Step 3: Cross multiply
    291,375.12x = 402,096.45 × 162,315.09
  4. Step 4: Simplify right side
    291,375.12x = 65,266,322,079.11
  5. Step 5: Solve for x
    x = 65,266,322,079.11/291,375.12
  6. Step 6: Final answer
    x = 223,994.15

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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.