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Finding the Fourth Proportional to 479,638.32, 719,528.56 and 159,685.69

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Solution

The fourth proportional to 479,638.32, 719,528.56 and 159,685.69 is: 239,552.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,638.32 : 719,528.56 = 159,685.69 : x
  2. Step 2: Convert to fraction form
    479,638.32/719,528.56 = 159,685.69/x
  3. Step 3: Cross multiply
    479,638.32x = 719,528.56 × 159,685.69
  4. Step 4: Simplify right side
    479,638.32x = 114,898,414,578.31
  5. Step 5: Solve for x
    x = 114,898,414,578.31/479,638.32
  6. Step 6: Final answer
    x = 239,552.20

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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.