Home / 275,081.40-379,612.02-154,222.72

Finding the Fourth Proportional to 275,081.40, 379,612.02 and 154,222.72

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Solution

The fourth proportional to 275,081.40, 379,612.02 and 154,222.72 is: 212,827.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,081.40 : 379,612.02 = 154,222.72 : x
  2. Step 2: Convert to fraction form
    275,081.40/379,612.02 = 154,222.72/x
  3. Step 3: Cross multiply
    275,081.40x = 379,612.02 × 154,222.72
  4. Step 4: Simplify right side
    275,081.40x = 58,544,798,269.09
  5. Step 5: Solve for x
    x = 58,544,798,269.09/275,081.40
  6. Step 6: Final answer
    x = 212,827.18

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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.