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Finding the Fourth Proportional to 318,949.70, 478,258.43 and 150,424.77

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Solution

The fourth proportional to 318,949.70, 478,258.43 and 150,424.77 is: 225,558.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,949.70 : 478,258.43 = 150,424.77 : x
  2. Step 2: Convert to fraction form
    318,949.70/478,258.43 = 150,424.77/x
  3. Step 3: Cross multiply
    318,949.70x = 478,258.43 × 150,424.77
  4. Step 4: Simplify right side
    318,949.70x = 71,941,914,333.31
  5. Step 5: Solve for x
    x = 71,941,914,333.31/318,949.70
  6. Step 6: Final answer
    x = 225,558.81

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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.