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Finding the Fourth Proportional to 615,455.20, 922,405.20 and 299,231.20

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Solution

The fourth proportional to 615,455.20, 922,405.20 and 299,231.20 is: 448,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,455.20 : 922,405.20 = 299,231.20 : x
  2. Step 2: Convert to fraction form
    615,455.20/922,405.20 = 299,231.20/x
  3. Step 3: Cross multiply
    615,455.20x = 922,405.20 × 299,231.20
  4. Step 4: Simplify right side
    615,455.20x = 276,012,414,882.24
  5. Step 5: Solve for x
    x = 276,012,414,882.24/615,455.20
  6. Step 6: Final answer
    x = 448,468.73

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1.5x scale

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.