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Finding the Fourth Proportional to 615,231.66, 922,991 and 210,427

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Solution

The fourth proportional to 615,231.66, 922,991 and 210,427 is: 315,689.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,231.66 : 922,991 = 210,427 : x
  2. Step 2: Convert to fraction form
    615,231.66/922,991 = 210,427/x
  3. Step 3: Cross multiply
    615,231.66x = 922,991 × 210,427
  4. Step 4: Simplify right side
    615,231.66x = 194,222,227,157
  5. Step 5: Solve for x
    x = 194,222,227,157/615,231.66
  6. Step 6: Final answer
    x = 315,689.58

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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.