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Finding the Fourth Proportional to 312,924.54, 469,199.34 and 99,600.30

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Solution

The fourth proportional to 312,924.54, 469,199.34 and 99,600.30 is: 149,340.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,924.54 : 469,199.34 = 99,600.30 : x
  2. Step 2: Convert to fraction form
    312,924.54/469,199.34 = 99,600.30/x
  3. Step 3: Cross multiply
    312,924.54x = 469,199.34 × 99,600.30
  4. Step 4: Simplify right side
    312,924.54x = 46,732,395,023.80
  5. Step 5: Solve for x
    x = 46,732,395,023.80/312,924.54
  6. Step 6: Final answer
    x = 149,340.78

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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.