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Finding the Fourth Proportional to 281,550.80, 388,447.08 and 172,614.80

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Solution

The fourth proportional to 281,550.80, 388,447.08 and 172,614.80 is: 238,151.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,550.80 : 388,447.08 = 172,614.80 : x
  2. Step 2: Convert to fraction form
    281,550.80/388,447.08 = 172,614.80/x
  3. Step 3: Cross multiply
    281,550.80x = 388,447.08 × 172,614.80
  4. Step 4: Simplify right side
    281,550.80x = 67,051,715,024.78
  5. Step 5: Solve for x
    x = 67,051,715,024.78/281,550.80
  6. Step 6: Final answer
    x = 238,151.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.