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Finding the Fourth Proportional to 403,706.30, 605,413.65 and 203,960.30

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Solution

The fourth proportional to 403,706.30, 605,413.65 and 203,960.30 is: 305,866.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,706.30 : 605,413.65 = 203,960.30 : x
  2. Step 2: Convert to fraction form
    403,706.30/605,413.65 = 203,960.30/x
  3. Step 3: Cross multiply
    403,706.30x = 605,413.65 × 203,960.30
  4. Step 4: Simplify right side
    403,706.30x = 123,480,349,678.10
  5. Step 5: Solve for x
    x = 123,480,349,678.10/403,706.30
  6. Step 6: Final answer
    x = 305,866.79

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1.5x scale

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.