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Finding the Fourth Proportional to 311,758.08, 467,790.72 and 145,557.76

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Solution

The fourth proportional to 311,758.08, 467,790.72 and 145,557.76 is: 218,408.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,758.08 : 467,790.72 = 145,557.76 : x
  2. Step 2: Convert to fraction form
    311,758.08/467,790.72 = 145,557.76/x
  3. Step 3: Cross multiply
    311,758.08x = 467,790.72 × 145,557.76
  4. Step 4: Simplify right side
    311,758.08x = 68,090,569,351.99
  5. Step 5: Solve for x
    x = 68,090,569,351.99/311,758.08
  6. Step 6: Final answer
    x = 218,408.35

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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.