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Finding the Fourth Proportional to 611,156.60, 843,383.04 and 339,208.64

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Solution

The fourth proportional to 611,156.60, 843,383.04 and 339,208.64 is: 468,100.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,156.60 : 843,383.04 = 339,208.64 : x
  2. Step 2: Convert to fraction form
    611,156.60/843,383.04 = 339,208.64/x
  3. Step 3: Cross multiply
    611,156.60x = 843,383.04 × 339,208.64
  4. Step 4: Simplify right side
    611,156.60x = 286,082,813,997.47
  5. Step 5: Solve for x
    x = 286,082,813,997.47/611,156.60
  6. Step 6: Final answer
    x = 468,100.67

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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.