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Finding the Fourth Proportional to 455,545.20, 683,933.40 and 266,199.60

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Solution

The fourth proportional to 455,545.20, 683,933.40 and 266,199.60 is: 399,659.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,545.20 : 683,933.40 = 266,199.60 : x
  2. Step 2: Convert to fraction form
    455,545.20/683,933.40 = 266,199.60/x
  3. Step 3: Cross multiply
    455,545.20x = 683,933.40 × 266,199.60
  4. Step 4: Simplify right side
    455,545.20x = 182,062,797,506.64
  5. Step 5: Solve for x
    x = 182,062,797,506.64/455,545.20
  6. Step 6: Final answer
    x = 399,659.13

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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.