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Finding the Fourth Proportional to 403,715.64, 605,691.89 and 119,413.70

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Solution

The fourth proportional to 403,715.64, 605,691.89 and 119,413.70 is: 179,155.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,715.64 : 605,691.89 = 119,413.70 : x
  2. Step 2: Convert to fraction form
    403,715.64/605,691.89 = 119,413.70/x
  3. Step 3: Cross multiply
    403,715.64x = 605,691.89 × 119,413.70
  4. Step 4: Simplify right side
    403,715.64x = 72,327,909,644.89
  5. Step 5: Solve for x
    x = 72,327,909,644.89/403,715.64
  6. Step 6: Final answer
    x = 179,155.58

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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.