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Finding the Fourth Proportional to 611,197.45, 843,410.28 and 339,243.94

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Solution

The fourth proportional to 611,197.45, 843,410.28 and 339,243.94 is: 468,133.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,197.45 : 843,410.28 = 339,243.94 : x
  2. Step 2: Convert to fraction form
    611,197.45/843,410.28 = 339,243.94/x
  3. Step 3: Cross multiply
    611,197.45x = 843,410.28 × 339,243.94
  4. Step 4: Simplify right side
    611,197.45x = 286,121,826,423.70
  5. Step 5: Solve for x
    x = 286,121,826,423.70/611,197.45
  6. Step 6: Final answer
    x = 468,133.21

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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.