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Finding the Fourth Proportional to 220,907.35, 331,479.95 and 87,788.76

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Solution

The fourth proportional to 220,907.35, 331,479.95 and 87,788.76 is: 131,730.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,907.35 : 331,479.95 = 87,788.76 : x
  2. Step 2: Convert to fraction form
    220,907.35/331,479.95 = 87,788.76/x
  3. Step 3: Cross multiply
    220,907.35x = 331,479.95 × 87,788.76
  4. Step 4: Simplify right side
    220,907.35x = 29,100,213,957.94
  5. Step 5: Solve for x
    x = 29,100,213,957.94/220,907.35
  6. Step 6: Final answer
    x = 131,730.40

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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.