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Finding the Fourth Proportional to 318,030.69, 438,863.79 and 174,790.85

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Solution

The fourth proportional to 318,030.69, 438,863.79 and 174,790.85 is: 241,201.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,030.69 : 438,863.79 = 174,790.85 : x
  2. Step 2: Convert to fraction form
    318,030.69/438,863.79 = 174,790.85/x
  3. Step 3: Cross multiply
    318,030.69x = 438,863.79 × 174,790.85
  4. Step 4: Simplify right side
    318,030.69x = 76,709,372,366.27
  5. Step 5: Solve for x
    x = 76,709,372,366.27/318,030.69
  6. Step 6: Final answer
    x = 241,201.16

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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.