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Finding the Fourth Proportional to 270,960.30, 406,670.85 and 121,430.70

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Solution

The fourth proportional to 270,960.30, 406,670.85 and 121,430.70 is: 182,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,960.30 : 406,670.85 = 121,430.70 : x
  2. Step 2: Convert to fraction form
    270,960.30/406,670.85 = 121,430.70/x
  3. Step 3: Cross multiply
    270,960.30x = 406,670.85 × 121,430.70
  4. Step 4: Simplify right side
    270,960.30x = 49,382,325,985.10
  5. Step 5: Solve for x
    x = 49,382,325,985.10/270,960.30
  6. Step 6: Final answer
    x = 182,249.30

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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.