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Finding the Fourth Proportional to 615,137.20, 922,619.40 and 194,455.60

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Solution

The fourth proportional to 615,137.20, 922,619.40 and 194,455.60 is: 291,656.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,137.20 : 922,619.40 = 194,455.60 : x
  2. Step 2: Convert to fraction form
    615,137.20/922,619.40 = 194,455.60/x
  3. Step 3: Cross multiply
    615,137.20x = 922,619.40 × 194,455.60
  4. Step 4: Simplify right side
    615,137.20x = 179,408,508,998.64
  5. Step 5: Solve for x
    x = 179,408,508,998.64/615,137.20
  6. Step 6: Final answer
    x = 291,656.09

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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.