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Finding the Fourth Proportional to 408,399.96, 563,509.36 and 238,601.28

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Solution

The fourth proportional to 408,399.96, 563,509.36 and 238,601.28 is: 329,221.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,399.96 : 563,509.36 = 238,601.28 : x
  2. Step 2: Convert to fraction form
    408,399.96/563,509.36 = 238,601.28/x
  3. Step 3: Cross multiply
    408,399.96x = 563,509.36 × 238,601.28
  4. Step 4: Simplify right side
    408,399.96x = 134,454,054,587.98
  5. Step 5: Solve for x
    x = 134,454,054,587.98/408,399.96
  6. Step 6: Final answer
    x = 329,221.52

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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.