Home / 408,728.45-563,980.23-227,439.81

Finding the Fourth Proportional to 408,728.45, 563,980.23 and 227,439.81

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Solution

The fourth proportional to 408,728.45, 563,980.23 and 227,439.81 is: 313,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,728.45 : 563,980.23 = 227,439.81 : x
  2. Step 2: Convert to fraction form
    408,728.45/563,980.23 = 227,439.81/x
  3. Step 3: Cross multiply
    408,728.45x = 563,980.23 × 227,439.81
  4. Step 4: Simplify right side
    408,728.45x = 128,271,556,354.96
  5. Step 5: Solve for x
    x = 128,271,556,354.96/408,728.45
  6. Step 6: Final answer
    x = 313,830.75

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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.