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Finding the Fourth Proportional to 455,542.80, 683,605.80 and 266,002.80

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Solution

The fourth proportional to 455,542.80, 683,605.80 and 266,002.80 is: 399,174.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,542.80 : 683,605.80 = 266,002.80 : x
  2. Step 2: Convert to fraction form
    455,542.80/683,605.80 = 266,002.80/x
  3. Step 3: Cross multiply
    455,542.80x = 683,605.80 × 266,002.80
  4. Step 4: Simplify right side
    455,542.80x = 181,841,056,896.24
  5. Step 5: Solve for x
    x = 181,841,056,896.24/455,542.80
  6. Step 6: Final answer
    x = 399,174.47

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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.