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Finding the Fourth Proportional to 315,243.05, 435,100.16 and 192,756.37

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Solution

The fourth proportional to 315,243.05, 435,100.16 and 192,756.37 is: 266,043.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,243.05 : 435,100.16 = 192,756.37 : x
  2. Step 2: Convert to fraction form
    315,243.05/435,100.16 = 192,756.37/x
  3. Step 3: Cross multiply
    315,243.05x = 435,100.16 × 192,756.37
  4. Step 4: Simplify right side
    315,243.05x = 83,868,327,428.02
  5. Step 5: Solve for x
    x = 83,868,327,428.02/315,243.05
  6. Step 6: Final answer
    x = 266,043.38

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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.