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Finding the Fourth Proportional to 304,920.84, 420,755.88 and 168,920.83

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Solution

The fourth proportional to 304,920.84, 420,755.88 and 168,920.83 is: 233,091.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,920.84 : 420,755.88 = 168,920.83 : x
  2. Step 2: Convert to fraction form
    304,920.84/420,755.88 = 168,920.83/x
  3. Step 3: Cross multiply
    304,920.84x = 420,755.88 × 168,920.83
  4. Step 4: Simplify right side
    304,920.84x = 71,074,432,476.98
  5. Step 5: Solve for x
    x = 71,074,432,476.98/304,920.84
  6. Step 6: Final answer
    x = 233,091.42

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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.