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Finding the Fourth Proportional to 455,537.20, 683,921.40 and 266,191.60

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Solution

The fourth proportional to 455,537.20, 683,921.40 and 266,191.60 is: 399,647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,537.20 : 683,921.40 = 266,191.60 : x
  2. Step 2: Convert to fraction form
    455,537.20/683,921.40 = 266,191.60/x
  3. Step 3: Cross multiply
    455,537.20x = 683,921.40 × 266,191.60
  4. Step 4: Simplify right side
    455,537.20x = 182,054,131,740.24
  5. Step 5: Solve for x
    x = 182,054,131,740.24/455,537.20
  6. Step 6: Final answer
    x = 399,647.12

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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.