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Finding the Fourth Proportional to 275,972.70, 380,837.78 and 153,460.20

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Solution

The fourth proportional to 275,972.70, 380,837.78 and 153,460.20 is: 211,772.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,972.70 : 380,837.78 = 153,460.20 : x
  2. Step 2: Convert to fraction form
    275,972.70/380,837.78 = 153,460.20/x
  3. Step 3: Cross multiply
    275,972.70x = 380,837.78 × 153,460.20
  4. Step 4: Simplify right side
    275,972.70x = 58,443,441,886.36
  5. Step 5: Solve for x
    x = 58,443,441,886.36/275,972.70
  6. Step 6: Final answer
    x = 211,772.55

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1.5x scale

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.