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Finding the Fourth Proportional to 615,195.60, 922,102.20 and 315,560.40

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Solution

The fourth proportional to 615,195.60, 922,102.20 and 315,560.40 is: 472,986.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,195.60 : 922,102.20 = 315,560.40 : x
  2. Step 2: Convert to fraction form
    615,195.60/922,102.20 = 315,560.40/x
  3. Step 3: Cross multiply
    615,195.60x = 922,102.20 × 315,560.40
  4. Step 4: Simplify right side
    615,195.60x = 290,978,939,072.88
  5. Step 5: Solve for x
    x = 290,978,939,072.88/615,195.60
  6. Step 6: Final answer
    x = 472,986.05

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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.