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Finding the Fourth Proportional to 615,203.20, 922,027.20 and 298,979.20

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Solution

The fourth proportional to 615,203.20, 922,027.20 and 298,979.20 is: 448,090.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,203.20 : 922,027.20 = 298,979.20 : x
  2. Step 2: Convert to fraction form
    615,203.20/922,027.20 = 298,979.20/x
  3. Step 3: Cross multiply
    615,203.20x = 922,027.20 × 298,979.20
  4. Step 4: Simplify right side
    615,203.20x = 275,666,954,634.24
  5. Step 5: Solve for x
    x = 275,666,954,634.24/615,203.20
  6. Step 6: Final answer
    x = 448,090.90

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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.