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Finding the Fourth Proportional to 311,548.87, 429,937.89 and 168,308.97

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Solution

The fourth proportional to 311,548.87, 429,937.89 and 168,308.97 is: 232,266.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,548.87 : 429,937.89 = 168,308.97 : x
  2. Step 2: Convert to fraction form
    311,548.87/429,937.89 = 168,308.97/x
  3. Step 3: Cross multiply
    311,548.87x = 429,937.89 × 168,308.97
  4. Step 4: Simplify right side
    311,548.87x = 72,362,403,429.87
  5. Step 5: Solve for x
    x = 72,362,403,429.87/311,548.87
  6. Step 6: Final answer
    x = 232,266.62

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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.