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Finding the Fourth Proportional to 611,193.45, 843,404.77 and 339,239.95

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Solution

The fourth proportional to 611,193.45, 843,404.77 and 339,239.95 is: 468,127.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,193.45 : 843,404.77 = 339,239.95 : x
  2. Step 2: Convert to fraction form
    611,193.45/843,404.77 = 339,239.95/x
  3. Step 3: Cross multiply
    611,193.45x = 843,404.77 × 339,239.95
  4. Step 4: Simplify right side
    611,193.45x = 286,116,595,064.25
  5. Step 5: Solve for x
    x = 286,116,595,064.25/611,193.45
  6. Step 6: Final answer
    x = 468,127.72

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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.