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Finding the Fourth Proportional to 276,322.75, 381,325.40 and 157,090.75

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Solution

The fourth proportional to 276,322.75, 381,325.40 and 157,090.75 is: 216,785.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,322.75 : 381,325.40 = 157,090.75 : x
  2. Step 2: Convert to fraction form
    276,322.75/381,325.40 = 157,090.75/x
  3. Step 3: Cross multiply
    276,322.75x = 381,325.40 × 157,090.75
  4. Step 4: Simplify right side
    276,322.75x = 59,902,693,080.05
  5. Step 5: Solve for x
    x = 59,902,693,080.05/276,322.75
  6. Step 6: Final answer
    x = 216,785.24

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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.