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Finding the Fourth Proportional to 338,804.72, 508,135.80 and 218,501.36

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Solution

The fourth proportional to 338,804.72, 508,135.80 and 218,501.36 is: 327,706.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,804.72 : 508,135.80 = 218,501.36 : x
  2. Step 2: Convert to fraction form
    338,804.72/508,135.80 = 218,501.36/x
  3. Step 3: Cross multiply
    338,804.72x = 508,135.80 × 218,501.36
  4. Step 4: Simplify right side
    338,804.72x = 111,028,363,364.69
  5. Step 5: Solve for x
    x = 111,028,363,364.69/338,804.72
  6. Step 6: Final answer
    x = 327,706.07

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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.