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Finding the Fourth Proportional to 615,016.88, 922,935.72 and 215,657.36

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Solution

The fourth proportional to 615,016.88, 922,935.72 and 215,657.36 is: 323,629.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,016.88 : 922,935.72 = 215,657.36 : x
  2. Step 2: Convert to fraction form
    615,016.88/922,935.72 = 215,657.36/x
  3. Step 3: Cross multiply
    615,016.88x = 922,935.72 × 215,657.36
  4. Step 4: Simplify right side
    615,016.88x = 199,037,880,824.90
  5. Step 5: Solve for x
    x = 199,037,880,824.90/615,016.88
  6. Step 6: Final answer
    x = 323,629.95

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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.