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Finding the Fourth Proportional to 455,355.60, 683,227.80 and 218,576.40

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Solution

The fourth proportional to 455,355.60, 683,227.80 and 218,576.40 is: 327,957.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,355.60 : 683,227.80 = 218,576.40 : x
  2. Step 2: Convert to fraction form
    455,355.60/683,227.80 = 218,576.40/x
  3. Step 3: Cross multiply
    455,355.60x = 683,227.80 × 218,576.40
  4. Step 4: Simplify right side
    455,355.60x = 149,337,472,903.92
  5. Step 5: Solve for x
    x = 149,337,472,903.92/455,355.60
  6. Step 6: Final answer
    x = 327,957.91

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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.