Home / 349,120.32-523,868.16-138,760

Finding the Fourth Proportional to 349,120.32, 523,868.16 and 138,760

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Solution

The fourth proportional to 349,120.32, 523,868.16 and 138,760 is: 208,214.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,120.32 : 523,868.16 = 138,760 : x
  2. Step 2: Convert to fraction form
    349,120.32/523,868.16 = 138,760/x
  3. Step 3: Cross multiply
    349,120.32x = 523,868.16 × 138,760
  4. Step 4: Simplify right side
    349,120.32x = 72,691,945,881.60
  5. Step 5: Solve for x
    x = 72,691,945,881.60/349,120.32
  6. Step 6: Final answer
    x = 208,214.59

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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.