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Finding the Fourth Proportional to 273,453.20, 409,985.40 and 104,908.40

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Solution

The fourth proportional to 273,453.20, 409,985.40 and 104,908.40 is: 157,288.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,453.20 : 409,985.40 = 104,908.40 : x
  2. Step 2: Convert to fraction form
    273,453.20/409,985.40 = 104,908.40/x
  3. Step 3: Cross multiply
    273,453.20x = 409,985.40 × 104,908.40
  4. Step 4: Simplify right side
    273,453.20x = 43,010,912,337.36
  5. Step 5: Solve for x
    x = 43,010,912,337.36/273,453.20
  6. Step 6: Final answer
    x = 157,288.02

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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.