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Finding the Fourth Proportional to 300,639.87, 414,951.30 and 187,440.75

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Solution

The fourth proportional to 300,639.87, 414,951.30 and 187,440.75 is: 258,710.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,639.87 : 414,951.30 = 187,440.75 : x
  2. Step 2: Convert to fraction form
    300,639.87/414,951.30 = 187,440.75/x
  3. Step 3: Cross multiply
    300,639.87x = 414,951.30 × 187,440.75
  4. Step 4: Simplify right side
    300,639.87x = 77,778,782,885.48
  5. Step 5: Solve for x
    x = 77,778,782,885.48/300,639.87
  6. Step 6: Final answer
    x = 258,710.81

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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.