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Finding the Fourth Proportional to 343,627.60, 515,317.80 and 118,927

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Solution

The fourth proportional to 343,627.60, 515,317.80 and 118,927 is: 178,347.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,627.60 : 515,317.80 = 118,927 : x
  2. Step 2: Convert to fraction form
    343,627.60/515,317.80 = 118,927/x
  3. Step 3: Cross multiply
    343,627.60x = 515,317.80 × 118,927
  4. Step 4: Simplify right side
    343,627.60x = 61,285,200,000.60
  5. Step 5: Solve for x
    x = 61,285,200,000.60/343,627.60
  6. Step 6: Final answer
    x = 178,347.72

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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.