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Finding the Fourth Proportional to 421,054.52, 581,443.28 and 270,413.96

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Solution

The fourth proportional to 421,054.52, 581,443.28 and 270,413.96 is: 373,420.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,054.52 : 581,443.28 = 270,413.96 : x
  2. Step 2: Convert to fraction form
    421,054.52/581,443.28 = 270,413.96/x
  3. Step 3: Cross multiply
    421,054.52x = 581,443.28 × 270,413.96
  4. Step 4: Simplify right side
    421,054.52x = 157,230,379,860.19
  5. Step 5: Solve for x
    x = 157,230,379,860.19/421,054.52
  6. Step 6: Final answer
    x = 373,420.48

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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.