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Finding the Fourth Proportional to 270,473.10, 405,591.29 and 128,359.11

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Solution

The fourth proportional to 270,473.10, 405,591.29 and 128,359.11 is: 192,482.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,473.10 : 405,591.29 = 128,359.11 : x
  2. Step 2: Convert to fraction form
    270,473.10/405,591.29 = 128,359.11/x
  3. Step 3: Cross multiply
    270,473.10x = 405,591.29 × 128,359.11
  4. Step 4: Simplify right side
    270,473.10x = 52,061,337,008.15
  5. Step 5: Solve for x
    x = 52,061,337,008.15/270,473.10
  6. Step 6: Final answer
    x = 192,482.49

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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.