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Finding the Fourth Proportional to 443,295.05, 664,638.80 and 158,979.51

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Solution

The fourth proportional to 443,295.05, 664,638.80 and 158,979.51 is: 238,360.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,295.05 : 664,638.80 = 158,979.51 : x
  2. Step 2: Convert to fraction form
    443,295.05/664,638.80 = 158,979.51/x
  3. Step 3: Cross multiply
    443,295.05x = 664,638.80 × 158,979.51
  4. Step 4: Simplify right side
    443,295.05x = 105,663,949,956.09
  5. Step 5: Solve for x
    x = 105,663,949,956.09/443,295.05
  6. Step 6: Final answer
    x = 238,360.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.