Home / 280,126.98-420,216.12-111,606.48

Finding the Fourth Proportional to 280,126.98, 420,216.12 and 111,606.48

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Solution

The fourth proportional to 280,126.98, 420,216.12 and 111,606.48 is: 167,419.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,126.98 : 420,216.12 = 111,606.48 : x
  2. Step 2: Convert to fraction form
    280,126.98/420,216.12 = 111,606.48/x
  3. Step 3: Cross multiply
    280,126.98x = 420,216.12 × 111,606.48
  4. Step 4: Simplify right side
    280,126.98x = 46,898,841,992.46
  5. Step 5: Solve for x
    x = 46,898,841,992.46/280,126.98
  6. Step 6: Final answer
    x = 167,419.94

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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.