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Finding the Fourth Proportional to 253,628.81, 380,583.24 and 141,372.22

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Solution

The fourth proportional to 253,628.81, 380,583.24 and 141,372.22 is: 212,136.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,628.81 : 380,583.24 = 141,372.22 : x
  2. Step 2: Convert to fraction form
    253,628.81/380,583.24 = 141,372.22/x
  3. Step 3: Cross multiply
    253,628.81x = 380,583.24 × 141,372.22
  4. Step 4: Simplify right side
    253,628.81x = 53,803,897,533.59
  5. Step 5: Solve for x
    x = 53,803,897,533.59/253,628.81
  6. Step 6: Final answer
    x = 212,136.38

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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.