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Finding the Fourth Proportional to 310,437.52, 428,405.48 and 181,383.57

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Solution

The fourth proportional to 310,437.52, 428,405.48 and 181,383.57 is: 250,310.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,437.52 : 428,405.48 = 181,383.57 : x
  2. Step 2: Convert to fraction form
    310,437.52/428,405.48 = 181,383.57/x
  3. Step 3: Cross multiply
    310,437.52x = 428,405.48 × 181,383.57
  4. Step 4: Simplify right side
    310,437.52x = 77,705,715,369.96
  5. Step 5: Solve for x
    x = 77,705,715,369.96/310,437.52
  6. Step 6: Final answer
    x = 250,310.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.