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Finding the Fourth Proportional to 292,242.40, 438,536.40 and 105,229.60

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Solution

The fourth proportional to 292,242.40, 438,536.40 and 105,229.60 is: 157,906.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,242.40 : 438,536.40 = 105,229.60 : x
  2. Step 2: Convert to fraction form
    292,242.40/438,536.40 = 105,229.60/x
  3. Step 3: Cross multiply
    292,242.40x = 438,536.40 × 105,229.60
  4. Step 4: Simplify right side
    292,242.40x = 46,147,009,957.44
  5. Step 5: Solve for x
    x = 46,147,009,957.44/292,242.40
  6. Step 6: Final answer
    x = 157,906.62

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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.