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Finding the Fourth Proportional to 300,640.87, 414,952.68 and 187,441.75

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Solution

The fourth proportional to 300,640.87, 414,952.68 and 187,441.75 is: 258,712.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,640.87 : 414,952.68 = 187,441.75 : x
  2. Step 2: Convert to fraction form
    300,640.87/414,952.68 = 187,441.75/x
  3. Step 3: Cross multiply
    300,640.87x = 414,952.68 × 187,441.75
  4. Step 4: Simplify right side
    300,640.87x = 77,779,456,506.39
  5. Step 5: Solve for x
    x = 77,779,456,506.39/300,640.87
  6. Step 6: Final answer
    x = 258,712.19

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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.