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Finding the Fourth Proportional to 274,713.66, 379,113.21 and 153,854.64

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Solution

The fourth proportional to 274,713.66, 379,113.21 and 153,854.64 is: 212,324.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,713.66 : 379,113.21 = 153,854.64 : x
  2. Step 2: Convert to fraction form
    274,713.66/379,113.21 = 153,854.64/x
  3. Step 3: Cross multiply
    274,713.66x = 379,113.21 × 153,854.64
  4. Step 4: Simplify right side
    274,713.66x = 58,328,326,443.79
  5. Step 5: Solve for x
    x = 58,328,326,443.79/274,713.66
  6. Step 6: Final answer
    x = 212,324.08

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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.