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Finding the Fourth Proportional to 371,509.89, 512,674.97 and 218,557.93

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Solution

The fourth proportional to 371,509.89, 512,674.97 and 218,557.93 is: 301,604.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,509.89 : 512,674.97 = 218,557.93 : x
  2. Step 2: Convert to fraction form
    371,509.89/512,674.97 = 218,557.93/x
  3. Step 3: Cross multiply
    371,509.89x = 512,674.97 × 218,557.93
  4. Step 4: Simplify right side
    371,509.89x = 112,049,176,549.85
  5. Step 5: Solve for x
    x = 112,049,176,549.85/371,509.89
  6. Step 6: Final answer
    x = 301,604.83

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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.