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Finding the Fourth Proportional to 274,506.71, 378,815.33 and 151,987.35

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Solution

The fourth proportional to 274,506.71, 378,815.33 and 151,987.35 is: 209,740.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,506.71 : 378,815.33 = 151,987.35 : x
  2. Step 2: Convert to fraction form
    274,506.71/378,815.33 = 151,987.35/x
  3. Step 3: Cross multiply
    274,506.71x = 378,815.33 × 151,987.35
  4. Step 4: Simplify right side
    274,506.71x = 57,575,138,146.08
  5. Step 5: Solve for x
    x = 57,575,138,146.08/274,506.71
  6. Step 6: Final answer
    x = 209,740.37

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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.