Home / 274,836.90-379,285.83-153,979.20

Finding the Fourth Proportional to 274,836.90, 379,285.83 and 153,979.20

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Solution

The fourth proportional to 274,836.90, 379,285.83 and 153,979.20 is: 212,497.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,836.90 : 379,285.83 = 153,979.20 : x
  2. Step 2: Convert to fraction form
    274,836.90/379,285.83 = 153,979.20/x
  3. Step 3: Cross multiply
    274,836.90x = 379,285.83 × 153,979.20
  4. Step 4: Simplify right side
    274,836.90x = 58,402,128,674.74
  5. Step 5: Solve for x
    x = 58,402,128,674.74/274,836.90
  6. Step 6: Final answer
    x = 212,497.41

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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.