Home / 280,126.48-420,215.37-111,605.98

Finding the Fourth Proportional to 280,126.48, 420,215.37 and 111,605.98

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Solution

The fourth proportional to 280,126.48, 420,215.37 and 111,605.98 is: 167,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,126.48 : 420,215.37 = 111,605.98 : x
  2. Step 2: Convert to fraction form
    280,126.48/420,215.37 = 111,605.98/x
  3. Step 3: Cross multiply
    280,126.48x = 420,215.37 × 111,605.98
  4. Step 4: Simplify right side
    280,126.48x = 46,898,548,179.91
  5. Step 5: Solve for x
    x = 46,898,548,179.91/280,126.48
  6. Step 6: Final answer
    x = 167,419.19

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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.