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Finding the Fourth Proportional to 615,213.89, 922,815.30 and 194,489.90

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Solution

The fourth proportional to 615,213.89, 922,815.30 and 194,489.90 is: 291,733.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,213.89 : 922,815.30 = 194,489.90 : x
  2. Step 2: Convert to fraction form
    615,213.89/922,815.30 = 194,489.90/x
  3. Step 3: Cross multiply
    615,213.89x = 922,815.30 × 194,489.90
  4. Step 4: Simplify right side
    615,213.89x = 179,478,255,415.47
  5. Step 5: Solve for x
    x = 179,478,255,415.47/615,213.89
  6. Step 6: Final answer
    x = 291,733.10

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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.