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Finding the Fourth Proportional to 615,215.30, 922,825.11 and 299,401.70

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Solution

The fourth proportional to 615,215.30, 922,825.11 and 299,401.70 is: 449,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,215.30 : 922,825.11 = 299,401.70 : x
  2. Step 2: Convert to fraction form
    615,215.30/922,825.11 = 299,401.70/x
  3. Step 3: Cross multiply
    615,215.30x = 922,825.11 × 299,401.70
  4. Step 4: Simplify right side
    615,215.30x = 276,295,406,736.69
  5. Step 5: Solve for x
    x = 276,295,406,736.69/615,215.30
  6. Step 6: Final answer
    x = 449,103.60

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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.