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Finding the Fourth Proportional to 890,836, 1,336,331.76 and 225,988

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Solution

The fourth proportional to 890,836, 1,336,331.76 and 225,988 is: 339,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,836 : 1,336,331.76 = 225,988 : x
  2. Step 2: Convert to fraction form
    890,836/1,336,331.76 = 225,988/x
  3. Step 3: Cross multiply
    890,836x = 1,336,331.76 × 225,988
  4. Step 4: Simplify right side
    890,836x = 301,994,941,778.88
  5. Step 5: Solve for x
    x = 301,994,941,778.88/890,836
  6. Step 6: Final answer
    x = 339,001.73

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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.