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Finding the Fourth Proportional to 372,006.86, 513,382.75 and 228,739.22

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Solution

The fourth proportional to 372,006.86, 513,382.75 and 228,739.22 is: 315,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,006.86 : 513,382.75 = 228,739.22 : x
  2. Step 2: Convert to fraction form
    372,006.86/513,382.75 = 228,739.22/x
  3. Step 3: Cross multiply
    372,006.86x = 513,382.75 × 228,739.22
  4. Step 4: Simplify right side
    372,006.86x = 117,430,771,079.91
  5. Step 5: Solve for x
    x = 117,430,771,079.91/372,006.86
  6. Step 6: Final answer
    x = 315,668.30

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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.