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Finding the Fourth Proportional to 428,767.58, 591,604.62 and 247,440.98

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Solution

The fourth proportional to 428,767.58, 591,604.62 and 247,440.98 is: 341,413.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,767.58 : 591,604.62 = 247,440.98 : x
  2. Step 2: Convert to fraction form
    428,767.58/591,604.62 = 247,440.98/x
  3. Step 3: Cross multiply
    428,767.58x = 591,604.62 × 247,440.98
  4. Step 4: Simplify right side
    428,767.58x = 146,387,226,945.33
  5. Step 5: Solve for x
    x = 146,387,226,945.33/428,767.58
  6. Step 6: Final answer
    x = 341,413.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.