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Finding the Fourth Proportional to 305,488.76, 421,568.16 and 167,671.04

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Solution

The fourth proportional to 305,488.76, 421,568.16 and 167,671.04 is: 231,382.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,488.76 : 421,568.16 = 167,671.04 : x
  2. Step 2: Convert to fraction form
    305,488.76/421,568.16 = 167,671.04/x
  3. Step 3: Cross multiply
    305,488.76x = 421,568.16 × 167,671.04
  4. Step 4: Simplify right side
    305,488.76x = 70,684,771,818.09
  5. Step 5: Solve for x
    x = 70,684,771,818.09/305,488.76
  6. Step 6: Final answer
    x = 231,382.56

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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.