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Finding the Fourth Proportional to 275,399.76, 380,080.80 and 154,573.68

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Solution

The fourth proportional to 275,399.76, 380,080.80 and 154,573.68 is: 213,328.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,399.76 : 380,080.80 = 154,573.68 : x
  2. Step 2: Convert to fraction form
    275,399.76/380,080.80 = 154,573.68/x
  3. Step 3: Cross multiply
    275,399.76x = 380,080.80 × 154,573.68
  4. Step 4: Simplify right side
    275,399.76x = 58,750,487,953.34
  5. Step 5: Solve for x
    x = 58,750,487,953.34/275,399.76
  6. Step 6: Final answer
    x = 213,328.03

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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.