Home / 421,261.59-631,892.41-140,778.84

Finding the Fourth Proportional to 421,261.59, 631,892.41 and 140,778.84

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Solution

The fourth proportional to 421,261.59, 631,892.41 and 140,778.84 is: 211,168.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,261.59 : 631,892.41 = 140,778.84 : x
  2. Step 2: Convert to fraction form
    421,261.59/631,892.41 = 140,778.84/x
  3. Step 3: Cross multiply
    421,261.59x = 631,892.41 × 140,778.84
  4. Step 4: Simplify right side
    421,261.59x = 88,957,082,502.25
  5. Step 5: Solve for x
    x = 88,957,082,502.25/421,261.59
  6. Step 6: Final answer
    x = 211,168.27

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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.