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Finding the Fourth Proportional to 239,424.39, 359,136.59 and 81,654.21

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Solution

The fourth proportional to 239,424.39, 359,136.59 and 81,654.21 is: 122,481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,424.39 : 359,136.59 = 81,654.21 : x
  2. Step 2: Convert to fraction form
    239,424.39/359,136.59 = 81,654.21/x
  3. Step 3: Cross multiply
    239,424.39x = 359,136.59 × 81,654.21
  4. Step 4: Simplify right side
    239,424.39x = 29,325,014,130.27
  5. Step 5: Solve for x
    x = 29,325,014,130.27/239,424.39
  6. Step 6: Final answer
    x = 122,481.32

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1.5x scale

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.