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Finding the Fourth Proportional to 304,812.20, 420,599.18 and 168,812.58

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Solution

The fourth proportional to 304,812.20, 420,599.18 and 168,812.58 is: 232,938.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,812.20 : 420,599.18 = 168,812.58 : x
  2. Step 2: Convert to fraction form
    304,812.20/420,599.18 = 168,812.58/x
  3. Step 3: Cross multiply
    304,812.20x = 420,599.18 × 168,812.58
  4. Step 4: Simplify right side
    304,812.20x = 71,002,432,721.68
  5. Step 5: Solve for x
    x = 71,002,432,721.68/304,812.20
  6. Step 6: Final answer
    x = 232,938.29

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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.