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Finding the Fourth Proportional to 304,656.12, 420,365.70 and 191,413.26

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Solution

The fourth proportional to 304,656.12, 420,365.70 and 191,413.26 is: 264,112.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,656.12 : 420,365.70 = 191,413.26 : x
  2. Step 2: Convert to fraction form
    304,656.12/420,365.70 = 191,413.26/x
  3. Step 3: Cross multiply
    304,656.12x = 420,365.70 × 191,413.26
  4. Step 4: Simplify right side
    304,656.12x = 80,463,569,029.18
  5. Step 5: Solve for x
    x = 80,463,569,029.18/304,656.12
  6. Step 6: Final answer
    x = 264,112.76

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1.5x scale

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.