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Finding the Fourth Proportional to 213,166.60, 319,749.90 and 102,574.60

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Solution

The fourth proportional to 213,166.60, 319,749.90 and 102,574.60 is: 153,861.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,166.60 : 319,749.90 = 102,574.60 : x
  2. Step 2: Convert to fraction form
    213,166.60/319,749.90 = 102,574.60/x
  3. Step 3: Cross multiply
    213,166.60x = 319,749.90 × 102,574.60
  4. Step 4: Simplify right side
    213,166.60x = 32,798,218,092.54
  5. Step 5: Solve for x
    x = 32,798,218,092.54/213,166.60
  6. Step 6: Final answer
    x = 153,861.90

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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.