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Finding the Fourth Proportional to 378,483.96, 567,758.74 and 138,663

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Solution

The fourth proportional to 378,483.96, 567,758.74 and 138,663 is: 208,006.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,483.96 : 567,758.74 = 138,663 : x
  2. Step 2: Convert to fraction form
    378,483.96/567,758.74 = 138,663/x
  3. Step 3: Cross multiply
    378,483.96x = 567,758.74 × 138,663
  4. Step 4: Simplify right side
    378,483.96x = 78,727,130,164.62
  5. Step 5: Solve for x
    x = 78,727,130,164.62/378,483.96
  6. Step 6: Final answer
    x = 208,006.52

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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.