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Finding the Fourth Proportional to 611,174.36, 843,413.72 and 339,244.61

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Solution

The fourth proportional to 611,174.36, 843,413.72 and 339,244.61 is: 468,153.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,174.36 : 843,413.72 = 339,244.61 : x
  2. Step 2: Convert to fraction form
    611,174.36/843,413.72 = 339,244.61/x
  3. Step 3: Cross multiply
    611,174.36x = 843,413.72 × 339,244.61
  4. Step 4: Simplify right side
    611,174.36x = 286,123,552,596.76
  5. Step 5: Solve for x
    x = 286,123,552,596.76/611,174.36
  6. Step 6: Final answer
    x = 468,153.72

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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.