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Finding the Fourth Proportional to 251,115.52, 376,704 and 103,413.76

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Solution

The fourth proportional to 251,115.52, 376,704 and 103,413.76 is: 155,133.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,115.52 : 376,704 = 103,413.76 : x
  2. Step 2: Convert to fraction form
    251,115.52/376,704 = 103,413.76/x
  3. Step 3: Cross multiply
    251,115.52x = 376,704 × 103,413.76
  4. Step 4: Simplify right side
    251,115.52x = 38,956,377,047.04
  5. Step 5: Solve for x
    x = 38,956,377,047.04/251,115.52
  6. Step 6: Final answer
    x = 155,133.29

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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.