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Finding the Fourth Proportional to 371,413.11, 557,437.80 and 368,617.40

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Solution

The fourth proportional to 371,413.11, 557,437.80 and 368,617.40 is: 553,241.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,413.11 : 557,437.80 = 368,617.40 : x
  2. Step 2: Convert to fraction form
    371,413.11/557,437.80 = 368,617.40/x
  3. Step 3: Cross multiply
    371,413.11x = 557,437.80 × 368,617.40
  4. Step 4: Simplify right side
    371,413.11x = 205,481,269,710.53
  5. Step 5: Solve for x
    x = 205,481,269,710.53/371,413.11
  6. Step 6: Final answer
    x = 553,241.83

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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.