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Finding the Fourth Proportional to 304,909.11, 420,795 and 168,948.99

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Solution

The fourth proportional to 304,909.11, 420,795 and 168,948.99 is: 233,160.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,909.11 : 420,795 = 168,948.99 : x
  2. Step 2: Convert to fraction form
    304,909.11/420,795 = 168,948.99/x
  3. Step 3: Cross multiply
    304,909.11x = 420,795 × 168,948.99
  4. Step 4: Simplify right side
    304,909.11x = 71,092,890,247.05
  5. Step 5: Solve for x
    x = 71,092,890,247.05/304,909.11
  6. Step 6: Final answer
    x = 233,160.93

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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.