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Finding the Fourth Proportional to 492,995.70, 739,484.64 and 138,004.29

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Solution

The fourth proportional to 492,995.70, 739,484.64 and 138,004.29 is: 207,003.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,995.70 : 739,484.64 = 138,004.29 : x
  2. Step 2: Convert to fraction form
    492,995.70/739,484.64 = 138,004.29/x
  3. Step 3: Cross multiply
    492,995.70x = 739,484.64 × 138,004.29
  4. Step 4: Simplify right side
    492,995.70x = 102,052,052,709.11
  5. Step 5: Solve for x
    x = 102,052,052,709.11/492,995.70
  6. Step 6: Final answer
    x = 207,003.94

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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.