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Finding the Fourth Proportional to 307,505.72, 424,139.82 and 199,877.24

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Solution

The fourth proportional to 307,505.72, 424,139.82 and 199,877.24 is: 275,688.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,505.72 : 424,139.82 = 199,877.24 : x
  2. Step 2: Convert to fraction form
    307,505.72/424,139.82 = 199,877.24/x
  3. Step 3: Cross multiply
    307,505.72x = 424,139.82 × 199,877.24
  4. Step 4: Simplify right side
    307,505.72x = 84,775,896,595.70
  5. Step 5: Solve for x
    x = 84,775,896,595.70/307,505.72
  6. Step 6: Final answer
    x = 275,688.84

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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.