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Finding the Fourth Proportional to 275,974.05, 380,875.74 and 153,478.63

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Solution

The fourth proportional to 275,974.05, 380,875.74 and 153,478.63 is: 211,818.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,974.05 : 380,875.74 = 153,478.63 : x
  2. Step 2: Convert to fraction form
    275,974.05/380,875.74 = 153,478.63/x
  3. Step 3: Cross multiply
    275,974.05x = 380,875.74 × 153,478.63
  4. Step 4: Simplify right side
    275,974.05x = 58,456,286,675.99
  5. Step 5: Solve for x
    x = 58,456,286,675.99/275,974.05
  6. Step 6: Final answer
    x = 211,818.05

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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.