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Finding the Fourth Proportional to 615,182.70, 921,996.45 and 298,958.70

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Solution

The fourth proportional to 615,182.70, 921,996.45 and 298,958.70 is: 448,060.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,182.70 : 921,996.45 = 298,958.70 : x
  2. Step 2: Convert to fraction form
    615,182.70/921,996.45 = 298,958.70/x
  3. Step 3: Cross multiply
    615,182.70x = 921,996.45 × 298,958.70
  4. Step 4: Simplify right side
    615,182.70x = 275,638,860,096.62
  5. Step 5: Solve for x
    x = 275,638,860,096.62/615,182.70
  6. Step 6: Final answer
    x = 448,060.16

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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.