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Finding the Fourth Proportional to 272,884.69, 409,370.79 and 115,136.38

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Solution

The fourth proportional to 272,884.69, 409,370.79 and 115,136.38 is: 172,723.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,884.69 : 409,370.79 = 115,136.38 : x
  2. Step 2: Convert to fraction form
    272,884.69/409,370.79 = 115,136.38/x
  3. Step 3: Cross multiply
    272,884.69x = 409,370.79 × 115,136.38
  4. Step 4: Simplify right side
    272,884.69x = 47,133,470,838.34
  5. Step 5: Solve for x
    x = 47,133,470,838.34/272,884.69
  6. Step 6: Final answer
    x = 172,723.03

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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.