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Finding the Fourth Proportional to 384,914.60, 577,371.90 and 314,930.60

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Solution

The fourth proportional to 384,914.60, 577,371.90 and 314,930.60 is: 472,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,914.60 : 577,371.90 = 314,930.60 : x
  2. Step 2: Convert to fraction form
    384,914.60/577,371.90 = 314,930.60/x
  3. Step 3: Cross multiply
    384,914.60x = 577,371.90 × 314,930.60
  4. Step 4: Simplify right side
    384,914.60x = 181,832,078,890.14
  5. Step 5: Solve for x
    x = 181,832,078,890.14/384,914.60
  6. Step 6: Final answer
    x = 472,395.90

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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.