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Finding the Fourth Proportional to 306,697.38, 423,237.82 and 170,731.08

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Solution

The fourth proportional to 306,697.38, 423,237.82 and 170,731.08 is: 235,606.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,697.38 : 423,237.82 = 170,731.08 : x
  2. Step 2: Convert to fraction form
    306,697.38/423,237.82 = 170,731.08/x
  3. Step 3: Cross multiply
    306,697.38x = 423,237.82 × 170,731.08
  4. Step 4: Simplify right side
    306,697.38x = 72,259,850,105.45
  5. Step 5: Solve for x
    x = 72,259,850,105.45/306,697.38
  6. Step 6: Final answer
    x = 235,606.35

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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.