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Finding the Fourth Proportional to 252,855.81, 348,941.25 and 138,136.37

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Solution

The fourth proportional to 252,855.81, 348,941.25 and 138,136.37 is: 190,628.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,855.81 : 348,941.25 = 138,136.37 : x
  2. Step 2: Convert to fraction form
    252,855.81/348,941.25 = 138,136.37/x
  3. Step 3: Cross multiply
    252,855.81x = 348,941.25 × 138,136.37
  4. Step 4: Simplify right side
    252,855.81x = 48,201,477,700.10
  5. Step 5: Solve for x
    x = 48,201,477,700.10/252,855.81
  6. Step 6: Final answer
    x = 190,628.32

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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.