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Finding the Fourth Proportional to 291,082.82, 436,642.65 and 91,411.07

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Solution

The fourth proportional to 291,082.82, 436,642.65 and 91,411.07 is: 137,122.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,082.82 : 436,642.65 = 91,411.07 : x
  2. Step 2: Convert to fraction form
    291,082.82/436,642.65 = 91,411.07/x
  3. Step 3: Cross multiply
    291,082.82x = 436,642.65 × 91,411.07
  4. Step 4: Simplify right side
    291,082.82x = 39,913,969,660.92
  5. Step 5: Solve for x
    x = 39,913,969,660.92/291,082.82
  6. Step 6: Final answer
    x = 137,122.38

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1.5x scale

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.