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Finding the Fourth Proportional to 455,540.80, 683,602.80 and 266,000.80

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Solution

The fourth proportional to 455,540.80, 683,602.80 and 266,000.80 is: 399,171.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,540.80 : 683,602.80 = 266,000.80 : x
  2. Step 2: Convert to fraction form
    455,540.80/683,602.80 = 266,000.80/x
  3. Step 3: Cross multiply
    455,540.80x = 683,602.80 × 266,000.80
  4. Step 4: Simplify right side
    455,540.80x = 181,838,891,682.24
  5. Step 5: Solve for x
    x = 181,838,891,682.24/455,540.80
  6. Step 6: Final answer
    x = 399,171.47

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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.