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Finding the Fourth Proportional to 291,903.70, 436,933.95 and 282,687.70

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Solution

The fourth proportional to 291,903.70, 436,933.95 and 282,687.70 is: 423,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,903.70 : 436,933.95 = 282,687.70 : x
  2. Step 2: Convert to fraction form
    291,903.70/436,933.95 = 282,687.70/x
  3. Step 3: Cross multiply
    291,903.70x = 436,933.95 × 282,687.70
  4. Step 4: Simplify right side
    291,903.70x = 123,515,853,377.42
  5. Step 5: Solve for x
    x = 123,515,853,377.42/291,903.70
  6. Step 6: Final answer
    x = 423,139.05

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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.