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Finding the Fourth Proportional to 486,272.88, 729,503.87 and 186,731.45

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Solution

The fourth proportional to 486,272.88, 729,503.87 and 186,731.45 is: 280,133.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,272.88 : 729,503.87 = 186,731.45 : x
  2. Step 2: Convert to fraction form
    486,272.88/729,503.87 = 186,731.45/x
  3. Step 3: Cross multiply
    486,272.88x = 729,503.87 × 186,731.45
  4. Step 4: Simplify right side
    486,272.88x = 136,221,310,844.54
  5. Step 5: Solve for x
    x = 136,221,310,844.54/486,272.88
  6. Step 6: Final answer
    x = 280,133.47

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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.