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Finding the Fourth Proportional to 311,808.39, 430,308.14 and 173,999.37

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Solution

The fourth proportional to 311,808.39, 430,308.14 and 173,999.37 is: 240,126.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,808.39 : 430,308.14 = 173,999.37 : x
  2. Step 2: Convert to fraction form
    311,808.39/430,308.14 = 173,999.37/x
  3. Step 3: Cross multiply
    311,808.39x = 430,308.14 × 173,999.37
  4. Step 4: Simplify right side
    311,808.39x = 74,873,345,265.87
  5. Step 5: Solve for x
    x = 74,873,345,265.87/311,808.39
  6. Step 6: Final answer
    x = 240,126.14

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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.