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Finding the Fourth Proportional to 257,999.99, 386,874.79 and 108,200.05

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Solution

The fourth proportional to 257,999.99, 386,874.79 and 108,200.05 is: 162,247.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,999.99 : 386,874.79 = 108,200.05 : x
  2. Step 2: Convert to fraction form
    257,999.99/386,874.79 = 108,200.05/x
  3. Step 3: Cross multiply
    257,999.99x = 386,874.79 × 108,200.05
  4. Step 4: Simplify right side
    257,999.99x = 41,859,870,384.05
  5. Step 5: Solve for x
    x = 41,859,870,384.05/257,999.99
  6. Step 6: Final answer
    x = 162,247.57

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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.