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Finding the Fourth Proportional to 304,981.32, 420,875.28 and 169,017.54

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Solution

The fourth proportional to 304,981.32, 420,875.28 and 169,017.54 is: 233,244.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,981.32 : 420,875.28 = 169,017.54 : x
  2. Step 2: Convert to fraction form
    304,981.32/420,875.28 = 169,017.54/x
  3. Step 3: Cross multiply
    304,981.32x = 420,875.28 × 169,017.54
  4. Step 4: Simplify right side
    304,981.32x = 71,135,304,472.41
  5. Step 5: Solve for x
    x = 71,135,304,472.41/304,981.32
  6. Step 6: Final answer
    x = 233,244.79

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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.