Home / 280,566.96-420,573.40-111,985.68

Finding the Fourth Proportional to 280,566.96, 420,573.40 and 111,985.68

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Solution

The fourth proportional to 280,566.96, 420,573.40 and 111,985.68 is: 167,867.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,566.96 : 420,573.40 = 111,985.68 : x
  2. Step 2: Convert to fraction form
    280,566.96/420,573.40 = 111,985.68/x
  3. Step 3: Cross multiply
    280,566.96x = 420,573.40 × 111,985.68
  4. Step 4: Simplify right side
    280,566.96x = 47,098,198,188.91
  5. Step 5: Solve for x
    x = 47,098,198,188.91/280,566.96
  6. Step 6: Final answer
    x = 167,867.94

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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.