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Finding the Fourth Proportional to 270,413.48, 405,501.88 and 128,299.29

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Solution

The fourth proportional to 270,413.48, 405,501.88 and 128,299.29 is: 192,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,413.48 : 405,501.88 = 128,299.29 : x
  2. Step 2: Convert to fraction form
    270,413.48/405,501.88 = 128,299.29/x
  3. Step 3: Cross multiply
    270,413.48x = 405,501.88 × 128,299.29
  4. Step 4: Simplify right side
    270,413.48x = 52,025,604,519.06
  5. Step 5: Solve for x
    x = 52,025,604,519.06/270,413.48
  6. Step 6: Final answer
    x = 192,392.80

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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.