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Finding the Fourth Proportional to 316,413.60, 474,953.94 and 309,273.06

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Solution

The fourth proportional to 316,413.60, 474,953.94 and 309,273.06 is: 464,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,413.60 : 474,953.94 = 309,273.06 : x
  2. Step 2: Convert to fraction form
    316,413.60/474,953.94 = 309,273.06/x
  3. Step 3: Cross multiply
    316,413.60x = 474,953.94 × 309,273.06
  4. Step 4: Simplify right side
    316,413.60x = 146,890,458,382.86
  5. Step 5: Solve for x
    x = 146,890,458,382.86/316,413.60
  6. Step 6: Final answer
    x = 464,235.60

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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.