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Finding the Fourth Proportional to 348,455.70, 522,683.55 and 253,977.30

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Solution

The fourth proportional to 348,455.70, 522,683.55 and 253,977.30 is: 380,965.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,455.70 : 522,683.55 = 253,977.30 : x
  2. Step 2: Convert to fraction form
    348,455.70/522,683.55 = 253,977.30/x
  3. Step 3: Cross multiply
    348,455.70x = 522,683.55 × 253,977.30
  4. Step 4: Simplify right side
    348,455.70x = 132,749,756,783.42
  5. Step 5: Solve for x
    x = 132,749,756,783.42/348,455.70
  6. Step 6: Final answer
    x = 380,965.95

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Similar ratio
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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.