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Finding the Fourth Proportional to 303,573.46, 455,350.95 and 78,928.93

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Solution

The fourth proportional to 303,573.46, 455,350.95 and 78,928.93 is: 118,390.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,573.46 : 455,350.95 = 78,928.93 : x
  2. Step 2: Convert to fraction form
    303,573.46/455,350.95 = 78,928.93/x
  3. Step 3: Cross multiply
    303,573.46x = 455,350.95 × 78,928.93
  4. Step 4: Simplify right side
    303,573.46x = 35,940,363,257.98
  5. Step 5: Solve for x
    x = 35,940,363,257.98/303,573.46
  6. Step 6: Final answer
    x = 118,390.99

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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.