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Finding the Fourth Proportional to 270,501.64, 405,605.58 and 80,935.72

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Solution

The fourth proportional to 270,501.64, 405,605.58 and 80,935.72 is: 121,359.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,501.64 : 405,605.58 = 80,935.72 : x
  2. Step 2: Convert to fraction form
    270,501.64/405,605.58 = 80,935.72/x
  3. Step 3: Cross multiply
    270,501.64x = 405,605.58 × 80,935.72
  4. Step 4: Simplify right side
    270,501.64x = 32,827,979,653.32
  5. Step 5: Solve for x
    x = 32,827,979,653.32/270,501.64
  6. Step 6: Final answer
    x = 121,359.63

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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.