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Finding the Fourth Proportional to 543,374.70, 815,062.05 and 188,424.60

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Solution

The fourth proportional to 543,374.70, 815,062.05 and 188,424.60 is: 282,636.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,374.70 : 815,062.05 = 188,424.60 : x
  2. Step 2: Convert to fraction form
    543,374.70/815,062.05 = 188,424.60/x
  3. Step 3: Cross multiply
    543,374.70x = 815,062.05 × 188,424.60
  4. Step 4: Simplify right side
    543,374.70x = 153,577,740,746.43
  5. Step 5: Solve for x
    x = 153,577,740,746.43/543,374.70
  6. Step 6: Final answer
    x = 282,636.90

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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.