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Finding the Fourth Proportional to 203,683.60, 281,220.42 and 155,851.48

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Solution

The fourth proportional to 203,683.60, 281,220.42 and 155,851.48 is: 215,179.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,683.60 : 281,220.42 = 155,851.48 : x
  2. Step 2: Convert to fraction form
    203,683.60/281,220.42 = 155,851.48/x
  3. Step 3: Cross multiply
    203,683.60x = 281,220.42 × 155,851.48
  4. Step 4: Simplify right side
    203,683.60x = 43,828,618,663.22
  5. Step 5: Solve for x
    x = 43,828,618,663.22/203,683.60
  6. Step 6: Final answer
    x = 215,179.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.