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Finding the Fourth Proportional to 274,272.80, 411,448.56 and 84,749.72

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Solution

The fourth proportional to 274,272.80, 411,448.56 and 84,749.72 is: 127,136.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,272.80 : 411,448.56 = 84,749.72 : x
  2. Step 2: Convert to fraction form
    274,272.80/411,448.56 = 84,749.72/x
  3. Step 3: Cross multiply
    274,272.80x = 411,448.56 × 84,749.72
  4. Step 4: Simplify right side
    274,272.80x = 34,870,149,013.91
  5. Step 5: Solve for x
    x = 34,870,149,013.91/274,272.80
  6. Step 6: Final answer
    x = 127,136.74

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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.