Home / 457,391.20-631,206.48-256,188.64

Finding the Fourth Proportional to 457,391.20, 631,206.48 and 256,188.64

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Solution

The fourth proportional to 457,391.20, 631,206.48 and 256,188.64 is: 353,544.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,391.20 : 631,206.48 = 256,188.64 : x
  2. Step 2: Convert to fraction form
    457,391.20/631,206.48 = 256,188.64/x
  3. Step 3: Cross multiply
    457,391.20x = 631,206.48 × 256,188.64
  4. Step 4: Simplify right side
    457,391.20x = 161,707,929,670.39
  5. Step 5: Solve for x
    x = 161,707,929,670.39/457,391.20
  6. Step 6: Final answer
    x = 353,544.03

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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.