Home / 445,970.19-615,439.29-242,021.15

Finding the Fourth Proportional to 445,970.19, 615,439.29 and 242,021.15

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Solution

The fourth proportional to 445,970.19, 615,439.29 and 242,021.15 is: 333,989.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,970.19 : 615,439.29 = 242,021.15 : x
  2. Step 2: Convert to fraction form
    445,970.19/615,439.29 = 242,021.15/x
  3. Step 3: Cross multiply
    445,970.19x = 615,439.29 × 242,021.15
  4. Step 4: Simplify right side
    445,970.19x = 148,949,324,720.98
  5. Step 5: Solve for x
    x = 148,949,324,720.98/445,970.19
  6. Step 6: Final answer
    x = 333,989.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.