Home / 421,232.20-631,848.30-261,799.90

Finding the Fourth Proportional to 421,232.20, 631,848.30 and 261,799.90

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Solution

The fourth proportional to 421,232.20, 631,848.30 and 261,799.90 is: 392,699.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,232.20 : 631,848.30 = 261,799.90 : x
  2. Step 2: Convert to fraction form
    421,232.20/631,848.30 = 261,799.90/x
  3. Step 3: Cross multiply
    421,232.20x = 631,848.30 × 261,799.90
  4. Step 4: Simplify right side
    421,232.20x = 165,417,821,755.17
  5. Step 5: Solve for x
    x = 165,417,821,755.17/421,232.20
  6. Step 6: Final answer
    x = 392,699.85

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Similar ratio
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1.5x scale

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.