Home / 291,135.42-436,700.70-80,773.38

Finding the Fourth Proportional to 291,135.42, 436,700.70 and 80,773.38

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Solution

The fourth proportional to 291,135.42, 436,700.70 and 80,773.38 is: 121,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,135.42 : 436,700.70 = 80,773.38 : x
  2. Step 2: Convert to fraction form
    291,135.42/436,700.70 = 80,773.38/x
  3. Step 3: Cross multiply
    291,135.42x = 436,700.70 × 80,773.38
  4. Step 4: Simplify right side
    291,135.42x = 35,273,791,587.37
  5. Step 5: Solve for x
    x = 35,273,791,587.37/291,135.42
  6. Step 6: Final answer
    x = 121,159.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.