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Finding the Fourth Proportional to 220,828.80, 304,743.80 and 120,226.80

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Solution

The fourth proportional to 220,828.80, 304,743.80 and 120,226.80 is: 165,913.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,828.80 : 304,743.80 = 120,226.80 : x
  2. Step 2: Convert to fraction form
    220,828.80/304,743.80 = 120,226.80/x
  3. Step 3: Cross multiply
    220,828.80x = 304,743.80 × 120,226.80
  4. Step 4: Simplify right side
    220,828.80x = 36,638,371,893.84
  5. Step 5: Solve for x
    x = 36,638,371,893.84/220,828.80
  6. Step 6: Final answer
    x = 165,913.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.