Home / 298,557.12-447,507.21-129,881.10

Finding the Fourth Proportional to 298,557.12, 447,507.21 and 129,881.10

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Solution

The fourth proportional to 298,557.12, 447,507.21 and 129,881.10 is: 194,678.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,557.12 : 447,507.21 = 129,881.10 : x
  2. Step 2: Convert to fraction form
    298,557.12/447,507.21 = 129,881.10/x
  3. Step 3: Cross multiply
    298,557.12x = 447,507.21 × 129,881.10
  4. Step 4: Simplify right side
    298,557.12x = 58,122,728,692.73
  5. Step 5: Solve for x
    x = 58,122,728,692.73/298,557.12
  6. Step 6: Final answer
    x = 194,678.76

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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.