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Finding the Fourth Proportional to 486,995.49, 672,052.67 and 272,135.57

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Solution

The fourth proportional to 486,995.49, 672,052.67 and 272,135.57 is: 375,546.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,995.49 : 672,052.67 = 272,135.57 : x
  2. Step 2: Convert to fraction form
    486,995.49/672,052.67 = 272,135.57/x
  3. Step 3: Cross multiply
    486,995.49x = 672,052.67 × 272,135.57
  4. Step 4: Simplify right side
    486,995.49x = 182,889,436,420.47
  5. Step 5: Solve for x
    x = 182,889,436,420.47/486,995.49
  6. Step 6: Final answer
    x = 375,546.47

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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.