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Finding the Fourth Proportional to 178,045.80, 266,550.30 and 172,861.80

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Solution

The fourth proportional to 178,045.80, 266,550.30 and 172,861.80 is: 258,789.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,045.80 : 266,550.30 = 172,861.80 : x
  2. Step 2: Convert to fraction form
    178,045.80/266,550.30 = 172,861.80/x
  3. Step 3: Cross multiply
    178,045.80x = 266,550.30 × 172,861.80
  4. Step 4: Simplify right side
    178,045.80x = 46,076,364,648.54
  5. Step 5: Solve for x
    x = 46,076,364,648.54/178,045.80
  6. Step 6: Final answer
    x = 258,789.39

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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.