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Finding the Fourth Proportional to 220,246, 303,913.70 and 129,582.03

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Solution

The fourth proportional to 220,246, 303,913.70 and 129,582.03 is: 178,808.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,246 : 303,913.70 = 129,582.03 : x
  2. Step 2: Convert to fraction form
    220,246/303,913.70 = 129,582.03/x
  3. Step 3: Cross multiply
    220,246x = 303,913.70 × 129,582.03
  4. Step 4: Simplify right side
    220,246x = 39,381,752,023.33
  5. Step 5: Solve for x
    x = 39,381,752,023.33/220,246
  6. Step 6: Final answer
    x = 178,808.02

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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.