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Finding the Fourth Proportional to 268,935.96, 371,128.56 and 148,074.78

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Solution

The fourth proportional to 268,935.96, 371,128.56 and 148,074.78 is: 204,341.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,935.96 : 371,128.56 = 148,074.78 : x
  2. Step 2: Convert to fraction form
    268,935.96/371,128.56 = 148,074.78/x
  3. Step 3: Cross multiply
    268,935.96x = 371,128.56 × 148,074.78
  4. Step 4: Simplify right side
    268,935.96x = 54,954,779,873.72
  5. Step 5: Solve for x
    x = 54,954,779,873.72/268,935.96
  6. Step 6: Final answer
    x = 204,341.51

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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.