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Finding the Fourth Proportional to 177,997.80, 266,478.30 and 172,813.80

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Solution

The fourth proportional to 177,997.80, 266,478.30 and 172,813.80 is: 258,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,997.80 : 266,478.30 = 172,813.80 : x
  2. Step 2: Convert to fraction form
    177,997.80/266,478.30 = 172,813.80/x
  3. Step 3: Cross multiply
    177,997.80x = 266,478.30 × 172,813.80
  4. Step 4: Simplify right side
    177,997.80x = 46,051,127,640.54
  5. Step 5: Solve for x
    x = 46,051,127,640.54/177,997.80
  6. Step 6: Final answer
    x = 258,717.40

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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.