Home / 415,311.12-622,529.28-215,419.32

Finding the Fourth Proportional to 415,311.12, 622,529.28 and 215,419.32

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Solution

The fourth proportional to 415,311.12, 622,529.28 and 215,419.32 is: 322,902.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,311.12 : 622,529.28 = 215,419.32 : x
  2. Step 2: Convert to fraction form
    415,311.12/622,529.28 = 215,419.32/x
  3. Step 3: Cross multiply
    415,311.12x = 622,529.28 × 215,419.32
  4. Step 4: Simplify right side
    415,311.12x = 134,104,834,177.69
  5. Step 5: Solve for x
    x = 134,104,834,177.69/415,311.12
  6. Step 6: Final answer
    x = 322,902.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.