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Finding the Fourth Proportional to 371,510.89, 512,676.34 and 218,558.93

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Solution

The fourth proportional to 371,510.89, 512,676.34 and 218,558.93 is: 301,606.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,510.89 : 512,676.34 = 218,558.93 : x
  2. Step 2: Convert to fraction form
    371,510.89/512,676.34 = 218,558.93/x
  3. Step 3: Cross multiply
    371,510.89x = 512,676.34 × 218,558.93
  4. Step 4: Simplify right side
    371,510.89x = 112,049,992,306.72
  5. Step 5: Solve for x
    x = 112,049,992,306.72/371,510.89
  6. Step 6: Final answer
    x = 301,606.21

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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.