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Finding the Fourth Proportional to 371,768.81, 513,029.19 and 218,771.76

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Solution

The fourth proportional to 371,768.81, 513,029.19 and 218,771.76 is: 301,898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,768.81 : 513,029.19 = 218,771.76 : x
  2. Step 2: Convert to fraction form
    371,768.81/513,029.19 = 218,771.76/x
  3. Step 3: Cross multiply
    371,768.81x = 513,029.19 × 218,771.76
  4. Step 4: Simplify right side
    371,768.81x = 112,236,300,129.03
  5. Step 5: Solve for x
    x = 112,236,300,129.03/371,768.81
  6. Step 6: Final answer
    x = 301,898.10

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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.