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Finding the Fourth Proportional to 270,605.40, 405,899.72 and 128,552.93

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Solution

The fourth proportional to 270,605.40, 405,899.72 and 128,552.93 is: 192,825.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,605.40 : 405,899.72 = 128,552.93 : x
  2. Step 2: Convert to fraction form
    270,605.40/405,899.72 = 128,552.93/x
  3. Step 3: Cross multiply
    270,605.40x = 405,899.72 × 128,552.93
  4. Step 4: Simplify right side
    270,605.40x = 52,179,598,292.18
  5. Step 5: Solve for x
    x = 52,179,598,292.18/270,605.40
  6. Step 6: Final answer
    x = 192,825.41

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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.